SR20 REDTOP t28r upgraded..... making no power help please

[95zenkisr20]

so after getting my sr back in for the third time i upgraded my turbo to an oem s15 spec r turbo.. im using a greddy profec b spec II and my read out says im making 6 psi but the power just isnt there its slowww.. plugs are gaped to .030... i have checked for boost leaks and vacuum leaks there are none.... i am running a draw through setup but because the turbo sits a little bit different than the stock t25 so i cannot run the hose from the bov back into the intake because it dose not reach... so i blocked off the intake hole would this make that big of a difference in power loss??

any help is much appreciate

[shadowcorp]

How slow, is it across the whole RPM band or is it just specific areas? Also if your matching the stock boost I think it's actually supposed to be 7 PSI, not that 1 PSI would really make a huge difference or anything.

[95zenkisr20]

it has the power down low before the spool but when it starts to spool up at half throttle at its like its N/A and then it starts to just bog down.. my bov dosent go off when this happens

[shadowcorp]

Sounds more like your car is freaking out because of the boost like loss of spark or to much fuel. You said third time about the engine, did you change any thing besides the turbo when you put it in? And I wouldn't worry about the BOV tube since any one that goes to a open air blocks that same pipe off.

[shadowcorp]

Also do you have any way to verify that it's making the boost it says since if it wasn't really spooling it would probably feel just as bad

[95zenkisr20]

yeah a while back i bent a valve a smeared a piston so my machine shop screwed up 3 times :( but yeah the turbo is the only upgrade

[shadowcorp]

You've checked your compression and all to make sure they didn't fudge any thing on their end?

[95zenkisr20]

yep the first thing i did was check the compression because 1 time they didnt mill my head.. and the 2ed time they didnt deck my block so when i got it back this last time that was the first thing i did when i got it running and i got 160 on all 4

[95zenkisr20]

also i can hear it spool up but the only way for me to read boost is through the greddy boost controller

[Sileighty_85]

so your running a Stock BOV?

Stock BOV's stay open untill the turbo build boost

So the Stock BOV needs to be replace with an Aftermarket one or make the hose reach the Intake pipe

[95zenkisr20]

no i have a greddy type s

[airhead]

upgraded my turbo to an oem s15 spec r turbo..




when you upgraded. Did you replace all your turbo gaskets? including the 7layer mani gasket? check for any leaks around the turbo manifold area. also did you tighten your mani to the block as the FSM says?

im having that problem right now with my car in the process of replacing all my gasket and putting on the OEM turbo manifold.

[95zenkisr20]

yes all gaskets have been replaced with new ones

[airhead]

Did you tighten the mani to the block like how the fsm says?

you might need a aftermarket BOV.

are your vacuum lines connected right? like cold pipe to the B.C and wastegate?

[95zenkisr20]

i have an aftermarket bov (greddy type s).. i will check vacuum lines again

[shadowcorp]

Do you have a mechanical boost Gage that you can verify what the turbo is doing?

[slider2828]

Take pictures of all your vacuum lines and turbo setup....

Otherwise its just going to be guessing and wasting your time and others.....

Take pictures of your intake and block offs, vaccum lines, bov, and boost controller setup. That will help us a lot.

[airhead]

i have an aftermarket bov (greddy type s).. i will check vacuum lines again

try to recir. the BOV?

or tighten the bolt on that BOV to make it stiff it could be opening/leaking when you boost..

[shadowcorp]

or tighten the bolt on that BOV to make it stiff it could be opening/leaking when you boost..[/QUOTE]

Yea it is possible that it's still reading boost but leaking it out before the intake

[95zenkisr20]

i tighten the bov all the way and re circulated it still no power

[95zenkisr20]

help pleasee

[PoorMans180SX]

Hey man, I'm in Michigan. If you really can't get it figured out, you could drive it down here and I could take a look at it. I'm about an hour and a half away though.

Is it making any weird noises? Do you hear the turbo spool? Did you make sure the wastegate works properly?

Basically there can be a bunch of things wrong. Try and be as specific as you can.

[95zenkisr20]

well dosent matter right now car blew up last night after only putting 200miles on the rebuilt motor.. took whole car to machine shop and told them to fix it

[airhead]

motor blew? what do you think was the cause?

[95zenkisr20]

i have no idea i had my whole long block assembled at a machine shop with arp head studs and mls head gasket.... blew a head gasket and motor started knocking after i lost about 5 quarts of oil in 45 min driving...put 5 quarts back in... good thing i was only 10min away from the machine shop so i limped the car at like 1am to the shop..... and called them this morning giving them hell (keep in mind i have had my motor their 3 times prior to this, this summer)

[imcunner]

sounds like you need to find a better machine shop

[s14freak93901]

first off, find a better shop.