black bear

Looking for about 420whp. I've had stock belt slip issues ever since i bought car 3 years ago. Tried Gates & Dayco. In summer no problem at all, in winter belt slips for 10 to 20 seconds (aircon, heater, lights, etc off) when starting in morning, annoying neighbors. Going to FI, with my luck it will slip all the time so looking at best setup.

I dimensions above are Vortech supercharger drive pulley DIAMETERS in inches. The standard 6-rib k type belt is approx. 13/16" (20mm) wide. The 10-rib belt would be 1 3/8" (35mm) wide. Assuming that pulley diameters are the same then there is a contact area increase of more than 67% i.e. increase in width/original width x 100%. 15/20x100%= 75% There is a small problem, Gates don't list a 10-rib belt @ 93" long (for 2.87" vortech pulley), but they list a 12-rib belt @ 93 1/8" long for about 19 GBP (Rockauto.co.uk) which would split to 10-rib. Dave

Thanks Adrian, In process of installing s/c. Bracket arrangement looks interesting but why bolt to body? When engine moves under hard acceleration it will apply load to s/c bracket possibly creating more slip (unless you have solid engine/transmission mounts. Maybe engine movement and s/c bracket flex work work together to keep belt tight?

Hi, worked on principle standard 6 ribs, 10 ribs would be 66.67% wider giving 66.67% more contact area. 8-rib may be more viable 33.33% more contact area.

Hi, There has been many threads about belts slipping especially with Supercharging. Are there any manufacturers out there that make a wider pulley set? Vortech sell pulleys with 8 and 10 ribs for other vehicle applications, so if the Nissan pulleys were say 10 ribs wide then there would be over 60% more contact area. This would reduce tension required to drive without slipping, increasing life of bearings etc. I'm looking into machining a full set in aluminium and maybe a 2.75" pulley from Vortech (they don't list a 2.86" in a 10 rib). I could machine the 2.87" also. Dave

Fuel return based on AAM Fuel Return Kit at a fraction of cost. I have machined an adapter (similar to AAM's) to replace fuel pressure regulator.This will provide much higher flow of fuel to Venturi to pick up fuel from LH side of tank. Tricky part (for me!), was making pipework fit between AN-4 bulkhead fitting in top plate and adapter. AAM use a crimped hose with long radius bend to go into AN-4 to 1/8" NPT 90 deg adapter which fits snug. I'm using AN-4 braided teflon hose and fittings which take up a bit more space. In hindsight I should have used rubber hose with barbed hose tails and jubilee clips as others have done. CJ Motorsports suggest increasing the swirl jet to about 0.080" for 225l Walboro, this could be increased further to 0.100" or 0.110" for larger pumps. I will probably go for 2mm (about 0.078") nearest drill bit I have, should be OK to pick up fuel from RH side of tank. 4l swirl tank should eliminate any possibility of starvation on hard track cornering. Dave Yeah, agree not much room, but what you have will work fine. I did away with my surge tank and external pump and went with this: http://cj-motorsport...in-pump-350zg35 I have seen this. But $805 + P&P + Import duty + Tax = but . Buying the 044 and surge tank cost about 200 GBP (I already have Walboro from another project).

This will be my setup: http://www.skylineowners.com/forum/21-tuning-technical-questions/153191-bosch-044-fuel-pump-questions-aiming-500-bhp.html with Walboro in tank.

Fuel return based on AAM Fuel Return Kit at a fraction of cost. I have machined an adapter (similar to AAM's) to replace fuel pressure regulator.This will provide much higher flow of fuel to Venturi to pick up fuel from LH side of tank. Tricky part (for me!), was making pipework fit between AN-4 bulkhead fitting in top plate and adapter. AAM use a crimped hose with long radius bend to go into AN-4 to 1/8" NPT 90 deg adapter which fits snug. I'm using AN-4 braided teflon hose and fittings which take up a bit more space. In hindsight I should have used rubber hose with barbed hose tails and jubilee clips as others have done. CJ Motorsports suggest increasing the swirl jet to about 0.080" for 225l Walboro, this could be increased further to 0.100" or 0.110" for larger pumps. I will probably go for 2mm (about 0.078") nearest drill bit I have, should be OK to pick up fuel from RH side of tank. 4l swirl tank should eliminate any possibility of starvation on hard track cornering. Dave

Part of swirl pot setup. Could have used standard pump but bought walboro then changed my mind to a swirl pot setup to be sure to fuel eliminate starvation issues reported elsewhere.

I'm installing: Vortech V3 Supercharger Tuner kit 3800 GBP Stillen Oil Pan (+ 1litre Oil) 200 GBP Mocal 19 Row Oil cooler, Thermostatic Sandwich plate, Hoses 125 GBP Denso 570cc Injectors, Ebay Australia 190 GBP Fuel Rails, Chinese but look good quality & fit 40 GBP Fuel Regulator 80 GBP Walbro 225l pump in tank 100 GBP Bosch 044 Pump outside tank 95 GBP 4l Swirl Tank 100 GBP High pressure fuel filter 30 GBP Stainless braided Teflon Hose & Fittings 250 GBP 1 step cooler Denso plugs 60 GBP Kinetix Stainless Plenum 550 GBP I purchased software last year to have car tuned down at Horsham so will get Jez to tune after installation. Running 297 BHP with Performance Exhaust, Berk Cats, Plenum Spacer and K & N Filter, Looking for 420 to 450 BHP. I bought a used 350Z in tank fuel pump assembly (45 GBP) to modify for Walbro pump, keeping original for reverting to standard. I have most of parts now, will be fitting oil pan, cooler etc over christmas break and will be ordering supercharger beginning of Jan. I will take lots of photos during install and post how I did it. Dave

Hi, I'm installing Vortech V3 supercharger on my Z. If I install everything, fuel return system, fuel rails, Kinetix plenum and Supercharger, can I run car to tuner (300 miles), where I will install bigger injectors, supercharger drive belt and plugs before tuning? I assume that air will be drawn through Supercharger with some restriction, resulting in maybe a small loss of power? Other option is to install everything and trailer the car down and back which is a hassle since I don't have a car trailer or anything to tow it. Merry Christmas all Dave

Hope to be there Sat/Sun

Sounds like the most likely explanation, the car had factory fitted hands free telephone fitted.However I like the other ideas above.

Hi, I have an electrical device mounted loosely on back of rear view mirror, don't know what it is! Just got car previous owner didn't know. Rectangular in shape with cable going into mirror. Anyone know? Dave