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Dtchy's Avatar
 
Join Date: Dec 2005
Location: Riverside, CA
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Please don't tell me this is true...

Hi all,

I have an 86 na and my steel manifolds are cracked. I recently purchased the cast iron ones from the earlier models, since they seem to be stronger. They're currently being ceramic coated...

I just read some info that they shouldn't fit the later models...Did I just waste $100 plus ????

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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you...

1994 BMW 325is M-Technic
1986 Porsche 944 N/A
Old 01-22-2006, 10:48 PM
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It's not true. The cast iron exhaust manifolds (that typically last the life of the car) will fit any 8v na 944 from 1982 to 1988.
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Old 01-23-2006, 01:00 AM
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PPFFFFFFEEEEWWWWWWWWW!

Thanks for the info man...

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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you...

1994 BMW 325is M-Technic
1986 Porsche 944 N/A
Old 01-23-2006, 07:13 AM
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You can, and we do, weld the steel ones. They only tend to need welding once in a lifetime.
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Old 01-23-2006, 07:54 AM
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Dtchy....I'm not sure they will fit yours....so AFTER you get them looking perfect, send them on down to me and let me see if they fit mine! ;-)
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Tom

1990 944S2 Cabriolet
2002 Chevy Silverado 2500HD
2003 Maroon Ford F350 dually
Old 01-23-2006, 08:03 AM
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Hehehe Razor...You wish!

I can send you a picture though...
Man, I was sweating bullets for a second.
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you...

1994 BMW 325is M-Technic
1986 Porsche 944 N/A
Old 01-23-2006, 09:02 AM
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It was worth a shot! I would have been sweating bullets too. Yep, I'd like to see the pictures after they are installed. Let me know how difficult that was. I think my 87 has a small exhaust leak but I haven't started to look and see yet. Can you or Britwrench shed some light on where they typically break at so I can start looking there? Britwrench, do you typically weld them on the car or do you take them off to repair them?

Thanks
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Tom

1990 944S2 Cabriolet
2002 Chevy Silverado 2500HD
2003 Maroon Ford F350 dually
Old 01-23-2006, 09:55 AM
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I'll post pictures of my cracked ones and the refinished set. I'm gonna have my steel set weld and keep them as a spare set. I probably won't get a whole lot of money out of those anyway.

I think mine is cracked on the #1 cylinder, but I'm not sure. The sounds is definitely bugging me...Like my car is farting all the time... At least she smells good...
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you...

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Old 01-23-2006, 11:57 AM
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I used the steel ones on my NA as well........... Just make sure your motor mounts are in good shape. The vibrations are not good for the headers/fuel rail etc....
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Old 01-23-2006, 12:24 PM
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They break in the "y" join for 1 - 4 cylinders. We take them off, cut open the cover piece and weld the crack, then reweld the cover. Have an old 944 head as a jig.
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Old 01-23-2006, 12:25 PM
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If I don't have an old head, is there any way to do this?
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Tom

1990 944S2 Cabriolet
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Old 01-23-2006, 12:38 PM
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Carefully clamp it to the bench. Measure the exhaust stud spacing and use a cardboard template as a guide.
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2001-2012 Gerber Motorsport Inc. 206-352-6911
07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red
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Old 01-23-2006, 03:51 PM
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While you have the steel maifolds off look down the 2-3 Y at the splice. The set I have is half blocked by the inserted tubing. Really poor job of splicing. Might dig them out and take a picture now that I have a digital camera.
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Old 01-24-2006, 08:06 AM
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That's a good tip. I'll check into that if mine are cracked. Did you cut them apart and reweld them or get different ones?
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Tom

1990 944S2 Cabriolet
2002 Chevy Silverado 2500HD
2003 Maroon Ford F350 dually
Old 01-24-2006, 10:02 AM
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If I can jump in...I decided to go with the cast iron ones. They hardly ever crack. I'm having them coated to expand the lifespan, so I never have to worry about taking them off again...As I said, I keep the other set as a spare.

But from what I've heard they usually tend to last a long time when they're rewelded.
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you...

1994 BMW 325is M-Technic
1986 Porsche 944 N/A
Old 01-24-2006, 10:54 AM
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