Since you're going for drag racing you may consider swapping the Q45 differential in. Its an R200 as well but uses the same axles as the 300ZX TT, which are huge. Plus its a lower ratio, which with the turbo setup, should make you faster on the strip. If the diff itself has a hard time staying together you may considering trying to fit the TT differential, which is an R230. Translation... its slightly bigger than the Ford 9 inchSuperHatch wrote:The plan...
S14 (late) 240SX Chassis
Late (94) VH45DE with built bottom end (Ross/Manley/ARP) and stock heads/cams (GTIR Valvesprings will be the only definite change with the possibility of SS valves)Custom intake manifoldTwin Turbo, GT35RsEngine management is up in the air right now, trying to learn all options before deciding.
BRETT Engineering GM T400 transmission adaptor kitJW Trans and custom converterSpecialty-Z TT Flexplate (ring gear flipped to work with stock starter)
Modified rear IRS (DSS axles, SPL arms, HKS Drag suspension) I would like to backhalf the car and use a 9-inch, but NHRA Sport Compact ET Bracket rules will not allow it. If the car keeps busting up pumpkins I'll go solid axle and just run the domestic events.
I'm also trying to put together a 92 VH with stock rods and ross pistons for SC'd duty in a Z32. That's down the road though, the dedicated track car is first.
I was unaware that the Q45 diff was an R200, I thought it was an R230 just like the TT-Z. I'm not terribly concerned with the axle size since Driveshaft Shop will be making me some axles that I shouldn't be able to break. The center section, as you mentioned, is my big concern.mtcookson wrote:Since you're going for drag racing you may consider swapping the Q45 differential in. Its an R200 as well but uses the same axles as the 300ZX TT, which are huge. Plus its a lower ratio, which with the turbo setup, should make you faster on the strip. If the diff itself has a hard time staying together you may considering trying to fit the TT differential, which is an R230. Translation... its slightly bigger than the Ford 9 inch
I can't remember if the subframes are different or just the arms. I know at the very least, the subframe design between the 240 and 300 are very, very similar, which would make it easier for the differential swaps.
Any idea the spline count on those axles?mtcookson wrote:Since you're going for drag racing you may consider swapping the Q45 differential in. Its an R200 as well but uses the same axles as the 300ZX TT, which are huge.
Ahh, yeah... I seemed to space out the bracket racing part of it. :lol:SuperHatch wrote:My goal is to build a reliable, consistent, low-9 second ET Bracket car.
I believe 32 spline.T45 wrote:Any idea the spline count on those axles?
lol, no problem. Actually, your input prompted me to look into an R230 rear as an option, and apparently Full Race has done one in an S14 already. Their car has a 2JZ which necessitates the extra strength...mtcookson wrote:Ahh, yeah... I seemed to space out the bracket racing part of it. :lol:
Excellent, thanks! I will definately keep that in mind.mtcookson wrote:You know... I totally forgot, you can have the strength of the R230 with a 4.10 gear setup. I believe you can get them here: http://www.leadergears.com/sit...ent.5
That may work out for what you want.
Was that a hint that the SR20DE heads are closer to the VH45DE than once thought? Or just that the springs are a good match?SuperHatch wrote:
Excellent, thanks! I will definately keep that in mind.
Now I just need to find some SR20 inner valvesprings... (hint hint guys)
There is a thread in this forum about using the GTi-R inner valvesprings with the stock outter springs to help with increasing the rev limit slightly and increasing seat pressure. They are a nearly direct drop-in to the VH, but no, that does not mean the heads are anywhere near close. I have seem both heads first hand and they are very different.SSDwellah wrote:
Was that a hint that the SR20DE heads are closer to the VH45DE than once thought? Or just that the springs are a good match?
motorcycle ITB's because they are cheap, mounted in sets of 4, and have injectors/fuel rails already in them. The itb's will be angled towards each other cross ram style, make a plenum airbox that mounts under where the air horns attatch to the tb's, and have each plenum over the the valve covers like VG30DE's..IWannaS15 wrote:I'd like to hear more about your ITB ideas. Are you considering sportbike ITB's or some aftermarket units? Not sure how much hood clearance the FC has, but how are you planning to mount the two plenums?
Oddly enough I was going to use susuki hayabusa bodies before I had the custom ones done.There will be 4 complete sets already spaced out to suit the VH45 port spacing on ebay soon! Even got the correct susuki coupling pipes and modded to fut standard bosch injectors.defrag010 wrote:motorcycle ITB's because they are cheap, mounted in sets of 4, and have injectors/fuel rails already in them. The itb's will be angled towards each other cross ram style, make a plenum airbox that mounts under where the air horns attatch to the tb's, and have each plenum over the the valve covers like VG30DE's..
Sure. I'll get back to you in a week or so.doctorchee wrote:Hi there
same project heres. except difference car body. let me know your progress.
I can share my problems with you if you want for the front midship .