Hello, i have a 1997 prelude fully built, Pistons 10.1,Rods, Sleeves, Valves, Retainers, Springs, skunk2 manifold, 1200 RC injectors, walbro Fuel pump, Aem acu. and a big turbonetics setup with a treadstone 500 rated intercooler and 2.5 charge pipe. My problems is that at 20 psi i am only getting 427 WHP and with the size of my turbo and the h22 i shouldn't need 20 psi to get to 500 hp.
I did the work my self so i don't know what could be wrong.
I came up with two possible causes, 1) is the my turbo manifold, i have a Lovefab mini me, and i am not sure if that's causing the lack of power. 2) i am also thinking that maybe the cams, i am using type s cams and i don't know if they are good for turbo.
so please if any one has any ideas they will be welcome.
thanks alot.
Stock or oversized valves? Stock bore? Exhaust size? A/F readings? Intercooler size? Turbo size, A/R, cfms? Wastegate size? Anyone else this 2.5" charge piping may be a bit small? There are a lot of variables to take into account that you didn't mention. 20psi doesn't just make 500+...
__________________
94 prelude vtec, 89 supra turbo, 95 trans-am LT1
Hi, the intercooler is 6x22x3.5,stock size valves, stock bore, 3" piping, 40 mm wastegate
the first problem that come to my mind is the exhaust manifold, it is a Lovefab mini me, and i heard that it is not too good good for a lot of power. so i am not sure if start by getting another manifold or changing the cams.
the turbo is a 76mm compressor,ballbearing, 68mm exhaust wheel s-trim .96 a/r exhaust housing t-4
yes, i did change the map sensor i am running a 5 bar aem
depending on the turbo among other things this doesn't sound crazy wrong 427@20psi sounds like you have a flow restriction in the intake side somewhere, since you are running 2.5" charge pipes did you do anything for the tb or manifold? I run 22psi and just barely creep over 500whp....
__________________
1998 Prelude base 502whp@22psi
BB Squad v2. #130
Well Thats what I was thinking but I run 2.5" piping so thats why I am leaning towards the turbo specs. I have a fully built (skunk2) valvetrain with stock cams and stock intake manifold but my manifold while stock is all hogged out on the inside (so stock mani, ported about as much as possible) since I had a skunk2 but it wouldn't let me pass emissions in my state so I am assuming my manifold work is comparable to the skunk2 intake so assuming all other things are equal I'm curious what his compressor map looks like and all. I would think the exhaust manifold is better than mine, but I think that would affect spool up and the like more so than peak power.
__________________
1998 Prelude base 502whp@22psi
BB Squad v2. #130
The overlap on the type s cams wont help (NA setup cams will have a different lobe profile than ones setup for.Turbo), though my brother ran stock came just fine..
Throttle body may be dropping you some, but again when my brother switched to a GE intake manifold, the Erik's racing 68mm (? Iirc) wouldn't clear the firewall and he swapped me the Eriks for my stock, and he was still putting down over 600whp.
I also know with the larger Turbo (I forget which but its a beast) hes running an s300 with 1600cc injectors.
Your setup sounds similar to his (with piping size etc)... of you shoot me a pm I can send you his email address and he can tell you what all he had/did and any issues he hit on the way.. or hit up honda-tech.com and hit him up there, turbolude97.
Maybe it is your tb, just bore it out or get a larger diameter tb.
Also question guys, can boost 7 with stock exhaust?(5th gen) i dont want to get a fart cannon.
thank you guys for all the input. I haven't been looking at this post for a while and i apologize for that. well, the car is not in good shape now. my wife took it for a spin and lost control and crashed it. I am part it out well parting out the body and the turbo i am keeping the motor and tranny for another lude that i just bought.
The overlap on the type s cams wont help (NA setup cams will have a different lobe profile than ones setup for.Turbo), though my brother ran stock came just fine..
Throttle body may be dropping you some, but again when my brother switched to a GE intake manifold, the Erik's racing 68mm (? Iirc) wouldn't clear the firewall and he swapped me the Eriks for my stock, and he was still putting down over 600whp.
I also know with the larger Turbo (I forget which but its a beast) hes running an s300 with 1600cc injectors.
Your setup sounds similar to his (with piping size etc)... of you shoot me a pm I can send you his email address and he can tell you what all he had/did and any issues he hit on the way.. or hit up honda-tech.com and hit him up there, turbolude97.
Sent from my GT-I9000 using AutoGuide App
I decide to build my next project with AC and everything else so, i will be changing a lot of stuff in the car, now that i am starting from scratches.
i will keep u guys updated.
thanks a lot man. i am already working to swapping all the parts to another shell i bought. however, the tranny shell cracked. so i am in the need of a tranny outer case.
I think it's definetly possible, are you thinking race gas or 93? Race gas shouldn't be a problem, 93 you will likely need a minimum 1000cc injectors fuel rail and fpr upgrades.
__________________
1998 Prelude base 502whp@22psi
BB Squad v2. #130
I think it's definetly possible, are you thinking race gas or 93? Race gas shouldn't be a problem, 93 you will likely need a minimum 1000cc injectors fuel rail and fpr upgrades.
I have 1200 cc injectors and every thing else that u might think of in that motor. I was just wandering if 6262 is big enough to reach 550 whp on pump gas.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Linear Mode
