I've been trying to find the bolt sizes for the t3 flange on my manifold...I read on here that its a 3/8x24 but i cant get those bolts to go in...I tried the 3/8x16, and that goes in a little bit...I've tried all sorts of bolts but none will bite wit the thread and i dont want to force it and end up messing it up...could it be possible that the flange is backwards?

 

i really think my flange is backwards after looking at it real close...my flange is really smooth where the holes are doesnt have a "dimple" like this on my wastegate flange: (notice the "dimple" curvature around the hole?)


This is my T3 flange completely smooth with no "dimples" around the holes:


Now this is T3 flange inside the manifold that has the little "dimple" part like that of the wastegate flange:


Is there anything i can do to make use of this manifold? Cut the flange out and turn it over and have it re-welded? Or drill new holes and tap a new thread in?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Infinity_Racer &raquo;</TD></TR><TR><TD CLASS="quote">I've been trying to find the bolt sizes for the t3 flange on my manifold...I read on here that its a 3/8x24 but i cant get those bolts to go in...I tried the 3/8x16, and that goes in a little bit...I've tried all sorts of bolts but none will bite wit the thread and i dont want to force it and end up messing it up...could it be possible that the flange is backwards? </TD></TR></TABLE>

I swore it was the 3/8x16.

 

yea the 3/8x16 fits a little bit, but only goes like 1/8 of the way...i just dont want to force it in...

 

bump before bed

 

try chasing the threads with a tap.

 

you dont want to cut the flange off dude. trust me. just get a tap, and put a little motor oil on it for lube. then thread it into each hole only rotatingit about half a turn then turning it backwards to break the chip (if there is any). that should do ya.

 

ok thanks, i'll try to do that today and report back

 

YEAH IT won't matter what way your flange is on.

 

i remember they were coarse thread. fine thread wont fit.

krazy

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by krazy &raquo;</TD></TR><TR><TD CLASS="quote">i remember they were coarse thread. fine thread wont fit.

krazy</TD></TR></TABLE>

see everyone told me fine thread...my dad just came home and had a tap kit with him so we just re-tapped it and are using 3/8 x 16 now...are there certain types of bolts that i should use? you guys think i should use studs instead of bolts to support the turbo? /

 

studs are good. i personally use bolts, but then agian, we dont tap our turbine flanges.

 

before javier can say it.........use anti seize!!!! lol

 

so you think bolts are fine? any specific type? we only chased the tap on the flange of the manifold, not the turbine flange...