Im about finished getting my parts i wanted to upgrade and ready to install. My tuner saw my manifold and asked me what wastegate i was planning on using. I said my 38mm tial. I was told to get atleast a 44mm or i can pretty much expect boost creep. Im not sure if its b/c itll be making a decent amount of power or what, but any helpful input you guys could give id appreciate thanks.

so, my question is.. should i expect boost creep with my 38mm.. what should i do..

power goals ...eh.. about 385whp on pump

My setup.

B18c (head was port/polish w/a 3 angle)
srp 9.2-1 pistons
eagle H beam rods
JE rings
skunk 2 manifold
custom made by "me" manifold
custom 3" downpipe with electronic e cutout
brand new sc34
hks ssq
spearco front mount
etc..

 

you have pics of the manifold? if it is like the drag and only pulling exh off of 1 runner, with a 3" d.p. you may have creep issues especially with a cutout.

 

 

if you are trying to stay with low boost, you may have creep. you may be ok, but id like to see other oppinions, i have a 44 on mine but i plan on low boost except on race gas.

 

well i plan on having 2 settings a lower boost for daily driving, then when i wana play around, ill throw in some race fuel, select the high boost on the boost controller, and open up the cutout.

btw il be using Neptune

 

With a T3 hot side I've never seen a "ram horn" style manifold properly control boost with just a 38mm gate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jared &raquo;</TD></TR><TR><TD CLASS="quote">With a T3 hot side I've never seen a "ram horn" style manifold properly control boost with just a 38mm gate.</TD></TR></TABLE>what size does then...

 

how much boost? u might be more satsified with the 44mm

 

probably low boost at 12 and high boost around 18

 

With your turbo and that manifold a 44mm wg couldn't help ya..

 

wahts wrong with it.. what do i need

 

Run a couple of 38's

 

running 2 38's would be better? how can i do that with this mani

 

One on each runner on the front angeling them at 45deg.

 

im not making anotehr manifold, and i already cut the hole in this one... so what can i get that will work ?

 

It can still be done man, just make the hole bigger length vise than merge 2 tubes together and weld them to the manifold.

What spring are you running in the wastegate now?

 

my full race mani and 44mm wastegate held boost fine at 10psi no creep at all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vaporboy12 &raquo;</TD></TR><TR><TD CLASS="quote">my full race mani and 44mm wastegate held boost fine at 10psi no creep at all
</TD></TR></TABLE>

What pressure spring are you running?

I have heared of some people having luck running the 7psi spring and controlling the rest with a controller, to get rid or the spike or creep.

I'm just thinking that 2 38's will solve the problem for sure but a single 44mm might do it too.


Modified by Adi Radoncic at 1:33 AM 10/22/2005