96 GSR-T

My setup wont hold 15lb boost for ****, raises 5lb from 6k to redline on a ramhorn, anybody think this is the problem? Appears to be a 38mm hole with a 44mm flange welded on. I am now trying to firgure out how to bore this hole out, any suggestions?

Turbo-charged

add a 2nd gate. what turbo?

96 GSR-T

T67HO I cant imagine this not being the issue, basically trying to stuff 44mm of **** through a 38mm hole

Turbo-charged

the 67's usually require a 2nd gate-- the little bit of porting that you could do with what your showing in that picture isnt going to do much for you


i had a customer with a 67 that with a 12psi spring would make 20lbs. we put a 2nd gate on it and it would hold 12 perfectly....

there is a reason most of the guys running big turbo's run 2 wastegates, its not just for fashion or bling

96 GSR-T

How do you suggest installing a 2nd gate on a ramhorn? I was looking into a single 60mm but the collector is so small on this manifold it wouldnt fit. I can deal with a little creep but this much makes my boost by gear pretty much useless.

DaveF

that setup (t3/67) held 11 psi fine.

speedlabx2005

I'm having the same issue with my t3t67H.O. i'm running a neukin ramhorn. my tial 60 mm wastegate just came in last night so i'm gonna weld the flange on to the 44mm opening, and see what happens.


Modified by speedlabx2005 at 10:37 AM 3/15/2008

zex_cool

run more boost.

96 GSR-T

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedlabx2005 &raquo;</TD></TR><TR><TD CLASS="quote">I'm having the same issue with my t3t67H.O. i'm running a neukin ramhorn. my tial 60 mm wastegate just came in last night so i'm gonna weld the flange on to the 44mm opening, and see what happens.


Modified by speedlabx2005 at 10:37 AM 3/15/2008</TD></TR></TABLE>

this is a neuking also, the pictues dont show the worst of it, it overhands worse on the top than the sides and bottom.

96 GSR-T

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">

that setup (t3/67) held 11 psi fine. </TD></TR></TABLE>

is that a FR manny and a 38mm Gate?

speedlabx2005

seems like i have the same set up as you. My neukin manifold with a 44mm wastegate creeped so im gonna weld on a 60mm tial and see what happens i'll keep you posted.

96 GSR-T

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedlabx2005 &raquo;</TD></TR><TR><TD CLASS="quote">seems like i have the same set up as you. My neukin manifold with a 44mm wastegate creeped so im gonna weld on a 60mm tial and see what happens i'll keep you posted. </TD></TR></TABLE>

are you going to make the hole in the manifold bigger or just weld on the 60 over the 44 hole? If you just do that I highly doubt it will do much, but let me know what happens, I just got done porting all that extra material out, the hole might of even been smaller than 38mm, the pipe that is connected to the hole looks to be 38mm as it is practically set inside the 44mm flange, I cant test it now but I will soon enough.

RCautoworks

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">
Appears to be a 38mm hole with a 44mm flange welded on. I am now trying to firgure out how to bore this hole out, any suggestions?</TD></TR></TABLE>

This is what I'm not understanding, no matter what size the flange is, most likely he used a 1.5 elbow, which is the same elbow size you run with a 38mm flange, every company does it like that.

The key is bigger hole.

96 GSR-T

If mine looked like that it wouldnt creep, mine is just a hole drilled with a 3/4 long round 1.5" diameter piece of pipe with a flange welded on, that above appears to have a nice transition into the WG

Above manifold &gt; my manifold lol

RCautoworks

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">If mine looked like that it wouldnt creep, mine is just a hole drilled with a 3/4 long round 1.5" diameter piece of pipe with a flange welded on, that above appears to have a nice transition into the WG

Above manifold &gt; my manifold lol</TD></TR></TABLE>

What I'm saying is the 44 wastegate should be letting more air out because of the valve, the hole in the manifold should be drilled to size of the elbow coming off of it.

The pics you posted are kind of blurry, but is there a lip you can see inside there ? Thats the issue if there is.

96 GSR-T

yes there is definately a lip, like I stated the hole appeared to be origionaly for a 38mm or smaller gate with my 44mm flange welded on top leaving a big lip all the way around much smaller than the piece attached to it, I just got done removing my turbo and ported it out, im taking pics now

96 GSR-T

I didnt take all of the material at the very top because that is where the runners join at into a point and I did not want to create a leak or weak spot, I definately removed a **** load of material out of there, hope this helps out some.

boostedcivicsir

i guess i am the exception to the rule. idk. 3 years 1 gate.

ben check your pm.

mrbsponge

Have you tried lowering the spring in your gate and see what happens?

on the first series of full-race manifolds there was an issue with the wastegate placement(very minor) but for me to get 15psi, I had to put in a like a 4psi spring or something like that.

Hot exhaust doesnt like to really just backup and shoot 90 degrees when its easier just to keep goin with the flow

96 GSR-T

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrbsponge &raquo;</TD></TR><TR><TD CLASS="quote">Have you tried lowering the spring in your gate and see what happens?

on the first series of full-race manifolds there was an issue with the wastegate placement(very minor) but for me to get 15psi, I had to put in a like a 4psi spring or something like that.

Hot exhaust doesnt like to really just backup and shoot 90 degrees when its easier just to keep goin with the flow</TD></TR></TABLE>

I will try a lower spring, think the lowest I can prob run is a 11 or 12 lb as I plan to retune to 30psi+ later this summer.


Modified by 96 GSR-T at 3:32 AM 3/16/2008

speedlabx2005

i'm having the same issues with my neukin manifold too , i think i should contact them

96 GSR-T

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedlabx2005 &raquo;</TD></TR><TR><TD CLASS="quote">i'm having the same issues with my neukin manifold too , i think i should contact them</TD></TR></TABLE> if there is nothing visible wrong with the WG area I think he wont cover it, mine is visibly evident there is an issue so thats why he is covering it.

Neukin

On that picture the ID of the tube all companies have access to is a 41mm ID so it works. That hole is small in the collector so it has to be a 38mm hole. Its our fault and wont happen again we will take care of it.

The 44mm flange has a ID of only 40mm so the 41mm id tube is larger then the hole in the flange. A 38mm flange is only 35mm ID. The 60mm has a flange 54mm ID and the tube most use is 52mm ID. This info was based on the SCH40 material we use. You can gain about 1mm-1.5mm when using a SCH10 but our welding and success rate has been great with the SCH40 so we stick to this unless requested by customer for the thinner material.

We changed how we do the wastegate setup in the manifolds about a year ago for the best so the problem was seen as fixed. Given only a hand full of guys have problems, others just work it out with lower springs but the new wastegate setup in the manifold helps control boost closer to the spring rates that wastegate manufactures rate them at.

We can mod the manifold with ease but the over heating of that area will reduce strength and could crack in the wastegate to collector area.