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Question on building new exhaust for EA81

Featured Replies

Should I leave the block spacers that are attached to the heads that are there for the emissions stuff (i will be removing emissions) or should my new header pipes just bolt straight up to the head itself?

remove the block spacers and run an ea82 y-pipe, which will make up the difference in header length. the EA82 y-pipe will fit the rest of the car the same.

 

what was the original application for your header pipe?

  • Author

im going to be fabricating the headers myself. so not sure what you mean by original application.

I allways pull the blocks off and tap the stud holes to a standard coarse thread and thread lock them in. Using a stud that course on one end and fine on the other, course side in head. I got sicks of stripped studs. and then run a wild custom system.

 

My custom system on my GL-10 turbo:

 

And custom dual on my lifted wagon:

  • Author

chim do you have any pictures of where the header bolts to the head? id like to see how you have it set up.

chim do you have any pictures of where the header bolts to the head? id like to see how you have it set up.

 

Ask and you shall receive

2011-01-04_17-56-12_32.jpg?t=1294192772

  • Author

thanks a million for the picture.

 

looks simple enough...

 

3 more questions for ya.

 

1. did you make the flanges yourself

 

2. do you happen to know how far away from the head a 90 degree bend would have to be to clear everything that under the car?

 

3. Do you happen to know the distance between the bolt centers on the flange?

Edited by aaronxs400

looks simple enough...

 

2 more questions for ya.

 

1. did you make the flanges yourself

 

2. do you happen to know how far away from the head a 90 degree bend would have to be to clear everything that under the car?

 

I used the stock flange and cut the old pipe off flush and ground it smooth, increased the flange to 2" and welded 2 inch pipe to it. i used to work at "custom metal concepts", metal fab and exhuast speciaty shop so we had a hydrolic bender. As far as your bends your gonna want to measure your bend and check the fit before you weld everything up. everything i have ever done has been built completly custom to the aplication. i don't use any universal measurments. but it's roughly 4-5 inches from the flange. your crossmember will be channeled for pipe clearence tho.

 

i wish i had a good line of sight of my cross pipe and collector on my turbo, that is just a work of art!. i have it all wrapped up in fiberform tape tho.

Edited by CHIM

  • Author

ahh i think im understand. so is the distance between the spacer block holes and the header flange holes the same? you just remove the block and then the header flange holes line right up?

  • Author

awesome.

 

im gonna go out and measure the distance between the bolt holes...i currently dont have a band saw and would like to make new flanges, i found a company that sells everything i need and they have several 2 bolt flanges that i could pry make work.

I'm working on fixing my EA81 exhaust (have holes and cracks). I was going to replace part of the drivers side Y-pipe and weld up another crack. I was wondering, if I made a straight pipe exhaust (like a header) and eliminate the cat, would I have problems tuning the factory carb? I would like to Weber in the future but can't right now. Thanks.

I'm working on fixing my EA81 exhaust (have holes and cracks). I was going to replace part of the drivers side Y-pipe and weld up another crack. I was wondering, if I made a straight pipe exhaust (like a header) and eliminate the cat, would I have problems tuning the factory carb? I would like to Weber in the future but can't right now. Thanks.

 

Nope, won't mess ya up, if your making a new Y pipe just watch your angles on the collector. on the collectors i build i make a seperator. lot of people don't wich causes a bit more than desirable back preasure.

Nope, won't mess ya up, if your making a new Y pipe just watch your angles on the collector. on the collectors i build i make a seperator. lot of people don't wich causes a bit more than desirable back preasure.

 

Collector? Is that like the cat, but without all the junk? Any pics?

Collector? Is that like the cat, but without all the junk? Any pics?

 

Yeh, ill take a picture as soon as I get out of the car. Given my phone let's me link the picture.

I bought a dual inlet cat and used that as my y pipe, I think it was for an

f-150?? anyway that worked awesome I don't have any pics tonight but if anyone would like to see that setup I would be more than willing to take pics!

Yeh, ill take a picture as soon as I get out of the car. Given my phone let's me link the picture.

 

That would be great!:)

I bought a dual inlet cat and used that as my y pipe, I think it was for an

f-150?? anyway that worked awesome I don't have any pics tonight but if anyone would like to see that setup I would be more than willing to take pics!

 

I wouldn't mind seeing that as well!:)

That would be great!:)

 

ok, so i was unable to find that collector, covered in snow somwhere on the property. it's the one i had on my car before i decided to go duels. a friend of mine has a car with a collector that i built tho, ill talk him into bringing it over for a pic.

ok, so i was unable to find that collector, covered in snow somwhere on the property. it's the one i had on my car before i decided to go duels. a friend of mine has a car with a collector that i built tho, ill talk him into bringing it over for a pic.

 

Thanks, I hope this isn't any trouble, pictures speak a 1000 words!

Sorry it took me so long to get these, The cars kind of in a shed right now and behind some stuff you know how it is :rolleyes: Anyway this is what I did (my dad has a pipe bender at his shop so that made it easy!) It sounds really good too!

 

4-1.jpg?t=1294364868

 

3-3.jpg?t=1294364868

 

2-3.jpg?t=1294364868

 

1-5.jpg?t=1294364868

Sorry it took me so long to get these, The cars kind of in a shed right now and behind some stuff you know how it is :rolleyes: Anyway this is what I did (my dad has a pipe bender at his shop so that made it easy!) It sounds really good too!

 

Thanks for the pics! looks good.

ok, so i was unable to find that collector, covered in snow somwhere on the property. it's the one i had on my car before i decided to go duels. a friend of mine has a car with a collector that i built tho, ill talk him into bringing it over for a pic.

 

Chim, your buddy ever bring his car by for you to get the pic? I like what 1982gl4 did on his, just like to see other variations.

Sorry it took me so long to get these, The cars kind of in a shed right now and behind some stuff you know how it is :rolleyes: Anyway this is what I did (my dad has a pipe bender at his shop so that made it easy!) It sounds really good too!

 

Off subject. I was reading another post you had made in reference to picture sizes. I run a mac also and was wondering what you did to downsize your pics.

  • 2 weeks later...

i am about to do a little exhaust work and i would also like to clean up the engine bay while i am at it..

my questions: can i also remove these components?

 

Photo0073.jpg

 

Photo0072.jpg

 

also: what size exhaust studs did you use? can i just toss the exhaust plate and cut/weld/extend the header pipe and re-use the stock exhaust manifold nuts

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