PM-Performance

Can anyone help me here with a solution?
My problem seems to be that more and more the boost is rising directly from the gate. it should have a .7bar spring in it and i saw about 16psi yesterday. It seems to get worse and worse. the weekend before i was logging 13-14.2 psi , and well before that i didnt see it going over maybe 11-12. i just dont get it. My tuner thinks that it might possibly be the Manifold design or the Wastegate being too small. Im at a total loss of words here. the EBC is plumbed into the system , but turned off. Im not sure that makes any bearing on it.

Its a Tial 40mm gate. on a Lovefab SST manifold. however he did make a 90 bend for the placement of the WG to make a little more room.

if anyoe could help me troubleshoot that would be great

B18C1CYA

what size wastegate does full-race use on there kit with the t3/t67 ?

FOrSfEd

They usually use a 40mm but I'm not sure now that the 40 is no longer in production. I think the new design 44mm will take it's place.

PM-Performance

yea im not sure.

RobbieG35

Im 99% sure the 40 has been discontinued, I think it is the 38 44 and 46 now

DaX

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHatch88 &raquo;</TD></TR><TR><TD CLASS="quote">Im 99% sure the 40 has been discontinued, I think it is the 38 44 and 46 now</TD></TR></TABLE>

Yep...no more 40's for the homies y0.

PM-Performance

thats great, i am aware of that , but that doesnt help my issue.

B18C1CYA

maybe get that new 44mm tial v-band one or the 46mm one, not shure i would say if you could remove the elbow try it with out it but you have a full lenght radiator right?

PM-Performance

na i have the civic core.

B18C1CYA

well then give it a try see what happens

B18C1CYA

nice numbers btw

jmal1919

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">Can anyone help me here with a solution?
My problem seems to be that more and more the boost is rising directly from the gate. it should have a .7bar spring in it and i saw about 16psi yesterday. It seems to get worse and worse. the weekend before i was logging 13-14.2 psi , and well before that i didnt see it going over maybe 11-12. i just dont get it. My tuner thinks that it might possibly be the Manifold design or the Wastegate being too small. Im at a total loss of words here. the EBC is plumbed into the system , but turned off. Im not sure that makes any bearing on it.

Its a Tial 40mm gate. on a Lovefab SST manifold. however he did make a 90 bend for the placement of the WG to make a little more room.

if anyoe could help me troubleshoot that would be great</TD></TR></TABLE>


Here's my crack at it from some recent reading. The 90 degree bend for the WG is probably not allowing enough flow of exhaust gas to & through the wastegate, thus causing boost creep. I would try and create a bend, if necessary, which would not force the exhaust gas to take a less than ideal path.

PM-Performance

im prob gonna cut the bend off then one of these days and just run it straight out. i didnt think it would be a prob since its been done on many log set ups. but who knows.

0xenocron

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jmal1919 &raquo;</TD></TR><TR><TD CLASS="quote">
Here's my crack at it from some recent reading. The 90 degree bend for the WG is probably not allowing enough flow of exhaust gas to & through the wastegate, thus causing boost creep. I would try and create a bend, if necessary, which would not force the exhaust gas to take a less than ideal path. </TD></TR></TABLE>

This is the exact opposite response I get from having a 90 off my Inline Pro to my Tial 38mm.

I've read many places that state that the 90 bend causes exhaust gases to speed up and cause less boost than should be there.

My $.02

jmal1919

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">im prob gonna cut the bend off then one of these days and just run it straight out. i didnt think it would be a prob since its been done on many log set ups. but who knows. </TD></TR></TABLE>

it seems every setup is different, and the flow characteristics are probably different between the log and tublar manifolds.

I guess you can tell that I've been reading a good book

EVIL_AWD

I have a LoveFab equal-length tubular manifold, with the wastegate elbow off at a 90 to clear my full-length radiator and I'm also using a Tial 40mm wastegate with no boost control problems. However, I am using a 1 bar spring and a AMS manual boost controller to control 19psi right on the money. That makes me believe it is not the manifold design or the wastegate being off at a 90.

-Trinitron-

What about turning the boost controller on and setting it to the minimum boost...

PM-Performance

with everything set to 0 i dont see how it would fix it. do you think the spring is just too small ? if the spring is too small i could see it opening early though not that late.

flip1199

try setting the boost controller to the lowest setting and see what happens. it's gonna be a trial and error thing..

R@mon

i dont think it has to do with wastegate placement, simply because it held lower boost before and has slowly gotten worse. i would check all boost/vac lines for any tears or holes , maybe the one of the lines is bleeding boost and coasing the higher boost numbers

Jared

i had the same problem when using an elbow to the wastegate using a 38mm gate and an sc61. wouldnt hold low boost past 7500 for ****, got rid of the elbow and problem solved.

PM-Performance

but see thats not the same prob, mine is makig more boost

Jared

but it is the same problem on low boost, after 7500, wouldnt hold, crept up to 20psi, despite anything that i did. removed the wastegate elbow, not it holds 14 all day.

Siriuswerks

Im Having the same Damn Problem. I was running an Air- water system it boosted 10psi no Problem. I bought the ss auto chrome manifold and a fmic. Now Get this THe first few days it's running working fine 10psi. Now the more i boost the worst it gets. I ran a srt4 and i saw 20 psi on a stock motor. Im glad it didn't blow up. SO im thinking wtf we put in a greddy profec b still the same thing. Change the wastegate out with another 35mm deltagate, nothing else happens. SO now we run the vacuum for the waste gate straight to the Turbo and Same ****. but Instead of 20 psi it's at 14psi. Remember all i have is a silver 7-9 psi spring. And have swapped out 2 wastegates which are theoretically in good working order.

Mods:
h22a, Ss autochrome manifold, greddy profec b spec 1, beats the hell out of me now im going to buy a tial 38mm wastegate hopefully that will solve the problem

Siriuswerks

anyone