Sunday, October 31, 2010
Black or White? Ultra Racing Front 4 Point Lower Arm Bar and Room Bar
Friday, October 29, 2010
Clutch Hose Upgrade - Installed
The airbox had to be removed to facilitate installation of the clutch hose. Picture below of the installed braided clutch hose
A teflon hose with stainless outer braid is not as flexible as a rubber hose necessitating a longer length. And make sure you properly bleed the hydraulic clutch cylinder after changing the hose. My Motul RBF600 brake fluid also doubled up as clutch hydraulic fluid. I'm thinking of sending my stock clutch hose to an AN fittings and braided hose supplier for replication complete with aluminium alloy end fittings. Any takers?
Tuesday, October 26, 2010
Brake Upgrade Part 1 - Rear Disc Brakes and Beam Upgrade
The rear beam on drum braked N16s do not come with the mounting bosses for the disc brake caliper so to upgrade to rear disc brakes one has to either try and weld the bosses on the beam itself or source for a used beam complete with rear disc brakes. I did try the third option which was to buy everything new but TC wanted to charged me in excess of three thousand smackers just for the beam alone and we haven't even started talking about the calipers, rotors, etc. Clearly going for a used beam is the only economical option. Oh and here's what you need for a rear disc brake upgrade:
1. Rear Beam from an N16 variant complete with disc brakes (caliper, brake rotor/disc, pads, brake hoses), axles, hubs, etc. The complete assembly. Even the dust boot on the drum is different from the disc brake so hardly anything cept the some bolts are reusable. I've decided to upgrade my brake hoses to PRO-RS items. Everything else is stock Nissan
2. Rear handbrake cables. The drum and disc brakes use different handbrake cables.
3. About 1 litre of brake fluid. I'm using Motul RBF600
It took me quite some time, ok more than 2 years in my case to finally find a decent condition rear beam. Blame that on other life priorities. TCEAS in Bayan Baru did managed to source for me a beam two years back but that didn't really fit my grade. The calipers and pads are all stock items. No point going for performance items yet as I'm on stock front brakes and upgrading to rear pads with a higher coefficient friction will just spoil the braking balance. Besides I have part two, three, etc. to write :)
Pix below of my rear beam after unpacking. Even the service centre manager helped to unpack the goods. Thank You Sir! The beam has been repainted and likewise the calipers. I choosed silver for the calipers for the oem look. Don't really dig ricey red. The long dangling things are not "tentacles" but are the handbrake cables.
So why all the hassle on the bushes? Picture below of the stock rear bush tells the whole story.
The stock soft bush is great for NVH as it allows for lotsa movement in all planes but this detrimentally impacts handling during hard braking and side load (cornering). The Superpro minimizes this. There is also the harder 90 durometer Superpro bush if one aspires to build and all out race car like the Dog III. I'm using the standard variant part number SPF1942K. The harder variant is SPF1942-90K. If you're interested in the bushes please contact me.
It took most of the morning to remove the stock beam. The exhaust heat shield had to be removed to access the handbrake assembly.
The PRO-RS rear braided brake hose installed to the caliper first. The mech managed to install the hose at the wrong side despite clear labels marking which side and which end. Luckily I spotted the mistake.
These are the ABS sensors for the rear wheel. Since the Slowtra does not have ABS these were removed. Per my TCEAS technician my beam's JDM as these use a different sensor compared to the MYDM N16 Sentra. There are two sensors (one per side) and part of the cabling is secured via brackets to the beam trailing arm.
The sensor goes here if you're curious. I just grabbed a socket wrench quickly to help the mech to remove.
Picture below showing the drum brake beam vs the disc brake beam
The disc brake beam actually has a larger diameter compared to the drum brake beam. 65mm vs 55mm. IMHO the disc brake is able to generate more load and stress to the beam hence the need for a stiffer and stronger beam .
Picture of below of the beam installed on the Slowtra together with brake hoses.
Rear caliper and rotor.
All MYDM N16 and USDM non-Brembo equipped B15 variants run a 258mm diameter X 10mm thick solid rotors with same pad shape and size. Rear caliper has a single piston of 33.96mm. Compare this to the drum with a 203.2mm inner diameter and 17.45mm single piston. Clearly my stock 7/8" master cylinder is maxed out! Luckily brake pedal travel is not compromised and pedal feel is excellent with the PRO-RS braided brake hoses. Took quite some time to properly bleed all the brakes as I also had my front brake hoses upgraded to PRO-RS items. These might not stay too long on my car though as I have other plans for my front brakes.
Here's how the rear disc brake looks behind the wheel. Took the entire day to install and bleed the brakes. I also installed my braided clutch hose and changed the Slowtra's engine oil and oil filter.
Driving back home the improvements were immediately very obvious. The rear end felt more firm and planted. The brakes were so much better in terms of feel. Better stopping power was also noticeable. I'm not done though. I have a DBA 4000 series rear disc on order which should be arriving from Down Under in January. Have not decided on what rear pads to use yet. There's plenty of choices avail from EBC to Hawk to Carbotech so no worries there. And why am I only talking rear brakes when an FF car requires 70-80% front braking action? What about the front brakes? My front brakes pads are on its last legs but I'm not changing coz I'm planning to revamp my entire front brake config. And I mean it. Please be patient for Part Two and Three. I promise it won't take two years :)
Saturday, October 23, 2010
The Cost of Inflation! PRO-RS Brake Hose Kit
Anyway here are the latest pictures. Packaging looks exactly the same as earlier.
Saturday, September 18, 2010
Pro-Bolt 2010 catalogue
Picture below of the CD. The CD contains the catalogue, price list and some pictures & logos.
The catalogue itself. Disclaimer - Extremely poisonous and will lead to a lightened wallet apart from car.
The catalogue can be found here. Pro-Bolt supplies WTCC Champions Seat Sport and Lotus Cars. They also supply Formula 3, World Rally and numerous national Rally Cross Teams throughout the world. Excellent pedigree I must say. I've ordered a full titanium bolt set for my strut bar and now contemplating if I should convert my suspension arm and brake caliper mount fasteners to Ti.
Sunday, September 12, 2010
Battery Musings
I promptly replaced the mild steel stock bolts with some aluminium items
Saves some weight and looks trick eh? But there's a problem. The stock bolts have flat hexagon heads while the aluminium bolts have socket cap heads which have a higher height and protruded from the well. This resulted in the battery and its plastic tray unable to seat properly as everything was resting on top of the 5 bolts. So I had to remove the aluminium bolts and put back the stock items. Sigh :(
Battery reinstalled with blue anodized titanium nuts. I'm currently on my second Delkor maintenance free battery. The first one lasted me close to three and a half years. Highly recommended. The Helix Cap 33 has been ditched. Anybody interested? Comes with trick real carbon mounting bracket.
This also got me thinking if I should replace the mucho heavy NS70 sized battery (>20kgs) with an Odyssey item. The Odyssey PC680 weighs 7kg only while the PC925 weighs 11.8kg but has more reserve capacity. Apart from saving lots of weight saved, the extra engine bay space reclaimed due to the smaller sized Odysseys will enable me to run something like an ITG Maxogen carbon airbox. Pix below of the stock and very restrictive resonator piping. One end leads to airbox while other end leads to the wheel arch fender.
Time to start saving more money..
Saturday, September 11, 2010
Brake Dilemma
Master Cylinder Diameter: 15/16" (23.8125mm) - For QG15DE, QG18DE and YD22DD engines
I was pretty happy as 15/16" size is common to the SP and set about designing a Wilwood BBK (Big Brake Kit) along similar piston sizes as what was initially done for the SP (~1.38" diameter per piston for a 4 piston caliper). Then one day while cleaning the master cylinder on the Slowtra I saw the following embossed on the Slowtra's master cylinder - 7/8". This immediately registered horror and then disgust as 7/8" is only 22.225mm which is smaller than 15/16". If the total caliper piston area of your upgraded BBK is too large for your master cylinder the term "pedal to the floor" will definitely ring a very painful, expensive and dangerous bell!
A quick check with the TCEAS parts center confirmed my nightmare. The MYDM N16 1.6 SG Manual comes with a smaller master cylinder compared to the SG-Lousy and 1.8 XG-L variants. Bummer! This means I would need to "upgrade" my stock master cylinder. And how much would a new master cylinder cost me? "RM1070 after discount" said the enthusiastic TCEAS technician. RM1070 just for a master cylinder!!! Once I pick myself up from the floor I quickly said "Thanks but No Thanks" and have decided to look for an excellent condition pre-loved 15/16" or even 1" master cylinder from my regular contacts. Picture below of the Nabco master cylinder on the Slowtra. Talk about spec and cost cutting :( The N16 Service Manual also lists a Tokico master cylinder which is different so be careful what you get.
Rejections
In the meantime here are 2 rejection emails for your amusement
From Impul Japan:
Mr Andrew Saw
Thank you for your inquiry.
We are sorry but we do not have N16 Sentra in Japan so we do not have any parts set for the vehicle. We have some reinforcement parts for Bluebird Sylphy but do not know if they are installable on Sentra or not because we do not have an actual vehile to try.
We are sorry.
Best regards,
.........................................
HOSHINO IMPUL Co., LTD
Marketing and Sales Promotion
Tel: +81-(0)3-3439-1122
Fax:+81-(0)3-3439-5522
http://www.impul.co.jp/
Interestingly Impul has ECUs and even a build engine (camshafts, pistons, etc) for the Sylpy making 160hp (claimed). NA Bagus? Sylphy owners you heard this from me. But we have a Malaysian Impul Sentra right? Errr... please don't even talk about it.
Another rejection this time from Okada Projects USA. Okada has upgraded ignition coils called the Plasma Direct for the Toyota Vios/Yaris/Vitz so I was kinda hoping they would be able to do something for the Slowtra. Kinda wishful thinking huh?
Hello Leng,
Thank you for your inquiry.
Unfortunately we do not have any products suitable for Nissan QG18 engine and B15 Sentra.
Best Regards,
Akira Sato
OKADA PROJECTS U.S.A., Inc.
23891 Via Fabricante Suite 614
Mission Viejo, CA 92691
Tel: 949-583-7800
Fax: 949-583-7810
http://www.okadaprojects.com/
Clutch Hose Upgrade - It's Here
Please don't ask if the clutch hose is available for auto N16s. I'm 99.9% sure it's the same as my stock clutch hose and there will be no fitment problems. One end fitting is a banjo while I'm pretty sure the other end is an NPT though I'm not sure on the thread size. Shame the end fittings are just steel and not anodized aluminium. Now thinking if I ahould send the hose to have a version with alloy end fittings done up. The Slowtra's engine bay looks kinda dull without coloured AN fittings :)
Saturday, September 4, 2010
Diet ICE?
In a bid to lose weight, the Slowtra lost it's spare tyre, car jack and tool kit. I know many will be shocked and say this is impractical but hey it costs zero ringgit and I'm desperate to lose some weight. The spare, jack and tool kit easily weighs more than 20 kilos and I can put everything back should I drive really long distance.
The next step is to simplify the ICE. I've decided to ditch the Focal 27KX subwoofer and its customized enclosure, the wiring, bracketry, etc. The Steg K series K202 amplifier powering the sub had already been sold to a Bro. This leaves the TRU amp and the Focal 165 K2P 6.5" 2 ways in the front door and its tweeters on the A-pillar as the only ICE gear left in the Slowtra. Told you I was desperate. The amount of weight lost is as follows:
- Focal 27KX - 7.2kg
- Steg K Series K202 amp - 3-4kg
- Sub enclosure, panelling, acryllic windows, VDH speaker cable for the sub, etc - ~5kg (I didn't weight but I'm pretty sure this is very under estimated)
Pix of the revised simplified ICE setup. Really neat looking and I get my boot space back. Problem now is how to fit a rear strut bar?
And this is not the end. I'm looking to ditch my TRU amp (~4.8kgs) for something much lighter like the Alpine PDX series of Class D amplifiers. Class D is more efficient than traditional class A/B leaving to smaller more compact circuitry with less neat for heat sink area. This leads to much smaller and lighter amplifiers albeit at the expense of sound quality but as I mentioned the brief now is for less weight rather than outright sound quality. The Alpine PDX-F4 weights nearly half my TRU Billet Series B2110 at only 2.87kg. Anybody want a mint condition preloved TRU Technology amp?
Monday, August 23, 2010
Nose Job
Pix below of a pristine and virgin looking front bumper and bonnet till the next meeting with pebbles especially from lorries. Grrrr... My painter's the same guy that's been doing the SP previously. He knows my requirements and standard so I wouldn't simply settle for anyone else.
So why did I decide to go for the Impul grille? Well I was thinking about replacing the stock grille as it had way too much chrome in it and besides you can't really repair the chrome bits damaged by pebble hits. The stock grille also costs substantially more than RM500 so rather than get a replacement might as well settle for the sportier Impul grille which retails at RM800 but I managed to get some decent discount. The Impul grille is also much simpler to maintain and repaint when necessary. Pix below of the humongous box the Impul grille came in. The part number is IMN16 04FGTS for those with a part number fetish. Just tell TC you want the Impul N16 or Sentra grille would be simpler.
The TCEAS technician took about 15 minutes to remove the stock grille (loosen 7 nuts) and install Impul grille (only 6 nuts to tighten). Factor in extra 15 minutes as additional time take to view, discuss and comment about the Nismo and cf parts on the Slowtra. Pix with the new grille fitted. The Impul badge really looks a mismatch with the Nismo logo on the bumper lip.
Closeup
I took the Slowtra home, gave it a good wash and promptly removed the Impul badge. The badge is fastened to the grille via good old double sided tape making it easy to remove. Lost a couple grammes of weight too! Looks loads better to my eyes with the Impul badge removed.
Closeup
All in all I'm pretty satisfied with the cosmetic upgrade. The Slowtra now looks to my eyes cleaner, sportier and less "Ah Pek" like.
Saturday, August 21, 2010
Clutch Hose Upgrade
The clutch hose is meant for a USDM Sentra B15 with QR25 engine and different gearbox but my research tells me all USDM B15s and likely MYDM N16s use the same clutch hose. Guess I'll know in a couple weeks whether I'm correct.
Wassup with the Dog III?
Motul RBF600 Factory Line Brake Fluid
Saturday, August 7, 2010
Impul Slowtra

Yes your eyes did not deceive you. These are pictures of a new N16 Slowtra. Impul is a popular Japanese Nissan tuning house and founded by ex-professional race driver Hoshino Impul. Impul has links to Nissan and currently runs a SuperGT team campaigning a GT500 class GTR. Quite why they (Impul and TCM) see fit to launch a hotted up Slowtra nearly 10 years after its launch and replaced by the G11 Sylphy or B16 Sentra in many markets defies logic but hey who's complaining?The "mods" are limited to new subtly redesigned bodykit, new sportier front grille, Impul shocks and finally a "power' mod - the Impul Blast II exhaust muffler which should give bout 1-2hp and better response at the expense of more noise. Rims/wheels appear to be 16" Impul FS-16 which is from Japan but if you ask me I'll take my Rays Gramlights anytime anyday ;). The other mods are made in Bolehland including the exhaust muffler. The Impul Slowtra is not cheap and is listed as:
- 1.6 MT Comfort - RM94.5K
- 1.6 MT Luxury - RM98.5K
- 1.6 AT Comfort - RM98.6K
- 1.6AT Luxury - RM102.6K
Luckily the parts can be purchased separately. The bodykit goes for RM3K, grille - RM800, shockers - RM2.5K, 16" Impul FS-16 wheels - RM4K, stainless steel Impul Blast-II exhaust muffler - RM1.8K. Whether the parts are worth it or expensively crazy you decide. A little bird did tell me the parts can be had with a 10% discount. Anybody managed to get more discount please do let me know. Am really interested in the exhaust and grille. Heck I've just called Alan and ordered the grille. Stay tuned..
It's Good to be Back!!!
I've been thinking bout the new direction for the Slowtra in the past 2-3 months and have decided to take it more towards the performance edge. Am still not building a "Dog" level racing car but the mods moving forward will be more towards a harder performance edge. The ICE is being slowly reduced to a simpler setup. I've removed one Steg amp and the sub is sitting in my boot unused. Anybody want a mint condition Focal 27KX sub? Have got a couple of real performance mods lined up in the roster so stay tuned. And yes, it's really good to be back!!!!!
Thursday, November 20, 2008
Nissan Motorsport Parts Catalog for B15/N16
Does anyone have a spare good condition QR25 engine and associate gearbox lying around?
Nissan Motorsports Competition Parts Catalog
Just downloaded this from NNAnet.com. I will list all the B15 parts, along with other necessary information. PM me for any further information you would like.Parts information will be listed as follows:DescriptionPart NumberPrice (if i have gotten it yet)I tried to see if my dealer gets any kind of discount, but unfortunately, we don't. The best thing to do would be to call Nissan Motorsports directly to quote prices or make a purchase. Contact information is at end of post.
Forged racing pistons for QR25DE, 13:1 CR (set of 4)12010-QR25G
Forged H beam connecting rod for QR25DE (set of 4)12100-QR25R$335.33
Piston Ring set for above12033-2J201
Racing connecting rod for QR25DE (set of 4)12100-QR25R$1980.00
Aluminum flywheel for all QR25DE Sentra SE-R and Spec V13210-QR251
High lift, race valve springs for QR25DE. ceramic coated. (set of 16)13203-QR25R
Spin-on adapter for remote oil filter location; can be used with an oil cooler. SR20DE & QR25DE (Big)15238-E1119$25.50
Nissan Motorsports grounding kit, includes 6 grounding wires & instructions, smoked clear heat shrink. Custom fit to Sentra SE-R and Spec V w/ QR25DE.24080-BGNDK
Poly engine mount insert kit QR25DE.99996-1112G
Racing piston and rod kit for QR25DE.99996-QRRSP
Replacement friction kit for aluminum flywheel, 12310-QR25112311-QR251
Short Shift kit for 6 speed Sentra SER and Spec V 10/03+34101-B15S4
Short Shift Kit for Sentra with 5 speed and 6 speed transmission. 2.5 liter engine only 02-0434101-B15SS
Short shift kit for all MT. Attatches to the transmission pivot for a 30% reduction in throws. 2nd piece attatches to shift lever to re-center. 2002+34101-B15S5
Front Hawk 9012 Blue racing brake pad set.41060-HB268
Front Hawk HP+ Autocross brake pad set.41060-HB268N
Stainless steel braided 4-wheel brake line kit, DOT compliant. For use on cars with ABS.46200-22046
MISCELLANEOUSI'm not going to list all the information. PM me for details.
NISMO shift knobs: 10mm threads: polished aluminum, black aluminum titanium, aluminum w/ carbon fiber insert, titanium GT race, JDM special edition-black leather w/ red stitching. 12mm threads: titanium GT race
Spec R emblemgear shift pattern plate: 5 & 6 speed
Nissan decal: black, red, silver, white
Koni strut bump stop, trim to fit
Heat insulation
Auto Math Handbook
Driver suit patch, Nissan Logo
Sentra Spec V GT4/5: fiberglass nose, rear deck lid, LH door panel, RH door panel, hood panel, L 1/4 panel, right 1/4 panel, rear bumper. Lexan rear window. Window surrounds. Latch.
And much more, including race equipment.
CONTACT INFORMATIONToll-Free Order Line: 888.833.3225 9:00 am - 5:00 pm (CST), Monday through Friday24-Hour Fax Line: 615.223.3341email: nmc.race@nissan-usa.com
Address: Nissan Motorspors 610 Enon Springs Road East Smyrna, TN 37167
Tuesday, November 11, 2008
Data Lost!
I've had 3-4 hard disk crashes previously but never this bad. Usually the data can be recovered but the problem now is my hard disk is really dead. Nothing can connect to it! Does anyone know how to salvage data from my kaput h/disk? Small reward (RM150-300 depending on how much can be salvaged) offered. Who wanna try? Am on my knees begging...


















