Mod ATR headers or buy new TA 4- bolts what to do?

[chasmat2316]

I'm looking to convert over to a 4 bolt Tang- v-band style turbo. The headers I have now are Real ATR 3-bolts. I was thinking of modding them buy cutting the old 3bolt flange off & replacing with 4-bolt flange & a larger tube, Or should I just sell them & buy new 4-bolt headers? How well would a tang turbo fit with just a 3-4 adapter plate? Does anyone sell an off the shelf down pipe for TA 4-bolts with a tang turbo? Thanx for all info!

 

[bison]

Sell your 3 bolt headers and buy a new set of TA's.

 

[ALVAROG1983]

I Agree

Sell your 3 bolt headers and buy a new set of TA's.

X2 I AGREE BUY SOME TA HEADERS

 

[ALVAROG1983]

Rjc Headgasket

Sell your 3 bolt headers and buy a new set of TA's.

I just wanted to ask did you ever go back and retorqued your RJC headgasket step 10.I'm in the purposes of doing it what a pain after not to long ago blown HG.

 

[chasmat2316]

Sell your 3 bolt headers and buy a new set of TA's.

I might just do that!

 

[Instro84]

sent you a pm.

 

[disco stu]

I've been wondering the same thing. Seems to me that the ATR's would work better than a log style manifold.

 

[bison]

I just wanted to ask did you ever go back and retorqued your RJC headgasket step 10.I'm in the purposes of doing it what a pain after not to long ago blown HG.

yes

 

[turbofabricator]

I would just use a 3 bolt to 4 bolt conversion adaptor. There is not alot of power to be had changing headers. As a matter of fact, there is NO reason to go to TA headers. A 3 to 4 bolt adaptor is a simple deal. If you need a 4 bolt flange, then you are probably making enough power to actually NEED the ATR headers. In most cases, ATR headers slowed most combinations down. At about 10.20's there is a gain to the ATR headers. If you need to change the location of the turbo, just cut off the 3 bolt flange and add a 4 bolt flange and a piece of tubing to move it where you need to. The ATR headers are a good design, though, there are clearance issues with them. Some of the headers were made a little off, and the cross-over tube would ride HARD on the passenger side upper control arm. When I went with the ATR headers as the foundation of my twin turbo's, I had to completely modify the cross-over tube to miss the control arm. Here are pic's of the modifications needed:

http://www.turbobuick.com/forums/general-turbo-buick-tech/221466-new-twin-turbo-headers.html

 

[chasmat2316]

I've been wondering the same thing. Seems to me that the ATR's would work better than a log style manifold.

I was thinking the same, how can a log style be better than ATR's? I would be easy to just buy new 4 bolts. I have a 3bolt-4 bolt adaptor, but not sure if that's the route to take. I might cut the tube & flange & redo. Still looking for all input. thanks

 

[ttypewhite]

Sell your 3 bolt headers and buy a new set of TA's.

Is there any documented info on the gains of TA over ATR? Not disagreeing with you, I just have no clue and would like to see factual data, cause I have a set of ATR's right now. But at the same token, I have nothing to compare them to because they replaced my stock headers.

 

[S2V6RACER]

I am using a set of converted 3 bolt headers to 4 bolt that used to be on Da Pumpkin. I have been over 132 in the 660' and over 163 in the 1/4 so I'd say they are pretty good units.

There are many variables that could affect performance so to make a claim that just switching to the TA's over ATR's and picking up without some solid data on WHY you went faster doesn't really tell us much.

 

[Chuck Leeper]

Turbo relo will affect the IC piping, the hood clearance, intake piping, etc.