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Turbo Choice Opinions Please?

cordiapower

By cordiapower,
in Engines & Forced Induction

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cordiapower Collaborator

cordiapower

Posted
Posted

r33 gts-t, t-57 stage6 ITS turbo high mounted, sard injectors, tomei fuel pump, intercooler etc. nine pack clutch, wolf3d computer, screamer pipe etc.

these are the figures i took from my dyno sheet as i couldnt scan it, does it seem laggy? car is only standard internals so timing is retarded and you can see the difference in power it made when timing was increased from 13 to 15...

at drags i did only 13.8@175km/h with 347atw and 14.2 with 372atw due to no traction and i think clutch is not handling the power (9 pack extreeme clutch 2500lbs pressure plate) as at drags after a run or a little burnout it just doesnt wanna go in 3rd and 4th gear so ill prolly need twin plate especially after rebuild and more power...

my question is does it seem laggy turbo from these figures as it makes less than 100kw around 3500rpm and less than 150rwkw under 4000rpm, while standard turbo with upped boost made over 100rwkw at 3000rpm and same power as big turbo at 4000rpm, and as you can see more timing gives more power but only after 4000rpm so if i do rebuild i will have more power (400+ rwhp) but still exactly the same response under 4000rpm and when boost hits it will make car loose traction even more and be even more undrivable...what do you think?

15-16 psi boost 347hpatw 13 timing

2770rpm 78rwhp (58rwkw)

2950 88 (66)

3400 125 (93)

3850 187 (140)

4300 215 (160)

4750 260 (194)

5200 292 (218)

5650 312 (233)

6100 333 (248)

6380peak 340 (254)

6550 347max (259)

7000 342(255)

15-16 psi boost 372.5hpatw 15 timing

2770rpm 79rwhp (59rwkw)

2950 87 (65)

3400 126 (94)

3850 197 (147)

4300 250 (187)

4750 290 (216)

5200 313 (233)

5650 338 (252)

6100 359 (268)

6380peak 372.5max (278)

6550 368 (275)

7000 363 (271)

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

A rebuild with pistons wont gain any power.

Without the addition of cams and all the other head type mods...

Just doing a bottom end wont yield any power/response gain in basioc terms.

The ITS is a bush bearing unit isnt it?

Wouldnt mind seeing the graph if you wouldnt mind posting it.

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