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Exhaust manifolds

Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=9230
Printed Date: September-28-2024 at 11:37pm


Topic: Exhaust manifolds
Posted By: dans
Subject: Exhaust manifolds
Date Posted: December-18-2007 at 1:17am
This will be my third season coming up with my 82 2001. When winterizing I always skipped the draining of my manifolds & flushed them with coolant cause the drain plugs looked bad.Well my fear was on the money cause after removing the plugs one side is stripped out real good.I was able to get it back in & epoxy it for a temporary fix( only stays in for a quarter turn). I guess I need the manifold kit from skidim & two new manifolds.No reason just fixing one & having another old one.My question is - I guess I can clean up the risers & just replace the manifolds with the new gasket & hardware kit ? Any tips on putting them on would be great. The 8 bolts one the bad side already came loose so I guess I got lucky. Are these really easy to do ? Looks like they just bolt right on with the gaskets in the right places. I could go another season with the rigged manifold but I don't want to risk hydro locking the motor one day.The plugs are rusted up & almost gone . Thanks ! Dan

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http://www.correctcraftfan.com/diaries/details.asp?ID=1404&sort=&pagenum=1&yrstart=1981&yrend=198582 - 82 2001



Replies:
Posted By: boat dr
Date Posted: December-18-2007 at 1:38am
Dan, I have a complete set that only have a few hours on them, Replaced with a set of Hi-Teks. They are taking up room in the shop , and need a new home. Give me a call and see if we can work something out......Boat dr
          1-318-386-2825 Billy

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boat dr

/diaries/details.asp?ID=4631 - 1949 Dart
/diaries/details.asp?ID=1533 - 1964 American Skier


Posted By: dans
Date Posted: December-18-2007 at 1:49am
It's gonna be a while before I can buy any . I will send you a message if you still have them in Feb. X - mas broke me.So they are new & no rust yet ? If by some reason you sell them dirt cheap for extra low price for x mas $$$ let me know. I can't afford more than $100.00 before Feb. & I know they are worth more than that.Thanks Billy !      Danstephens69@hotmail.com

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http://www.correctcraftfan.com/diaries/details.asp?ID=1404&sort=&pagenum=1&yrstart=1981&yrend=198582 - 82 2001


Posted By: 8122pbrainard
Date Posted: December-18-2007 at 9:50am
Dan, I don't want to spoil cleaning up Billy's shop from left over parts but are the drains the only problem? If the manifolds are still in good shape, I would remove them, clean up the matting surfaces and chase the threads on the drains. There is a good thread on putting abrasive paper on a flat surface for freashening up the mating surface and all you would need for the drains is a tap for chasing and new plugs.

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
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Posted By: dans
Date Posted: December-18-2007 at 11:26am
Thanks Pete for your help. They really need to be replaced. I could fix them for a couple seasons but they really are old & rusted out.The plugs are almost rusted out to were they are falling apart from the inside.If I had a larger new plug I could re thread them.Are the manifolds really as easy as just bolt on with the gaskets? Thanks.

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http://www.correctcraftfan.com/diaries/details.asp?ID=1404&sort=&pagenum=1&yrstart=1981&yrend=198582 - 82 2001


Posted By: 8122pbrainard
Date Posted: December-18-2007 at 12:36pm
Dan, Yes they just bolt on with the gaskets. I was just trying to save you some $ because you said it was tough this Christmas.

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<


Posted By: 87BFN owner
Date Posted: December-18-2007 at 5:07pm
Dan
Make it easy on yourself, goto the hardware store and buy four bolts that are about a half inch longer then your manifold bolts. Then cut the heads off those four bolts and grind a point on them. This will allow you to put two in each manifold and these studs will locate the holes. No messing around thread the other bolts in snug then remove the studs and replace with the last two bolts. This way it makes changing manifolds a one man job with out the hassle.

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Posted By: Mark Mel
Date Posted: December-18-2007 at 5:39pm
What about a helicoil kit? I know you're not supposed to do stainless and iron but I think the helicoils come in other materials.

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http://www.correctcraftfan.com/diaries/details.asp?ID=972&sort=&pagenum=4&yrstart=1976&yrend=1980" rel="nofollow - 1978 Nautique

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Posted By: 8122pbrainard
Date Posted: December-18-2007 at 6:44pm
Originally posted by Mark Mel Mark Mel wrote:

What about a helicoil kit?


If you are going to drill and tap for a thread insert why even bother? If there is enough meat in the boss area of the casting, just go to the next pipe size!

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<


Posted By: Mark Mel
Date Posted: December-18-2007 at 6:58pm
Even better idea.

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http://www.correctcraftfan.com/diaries/details.asp?ID=972&sort=&pagenum=4&yrstart=1976&yrend=1980" rel="nofollow - 1978 Nautique

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Posted By: 79nautique
Date Posted: December-19-2007 at 2:53pm
Originally posted by 8122pbrainard 8122pbrainard wrote:

Originally posted by Mark Mel Mark Mel wrote:

What about a helicoil kit?


If you are going to drill and tap for a thread insert why even bother? If there is enough meat in the boss area of the casting, just go to the next pipe size!


good luck taping cast iron to the next larges size.

Alos why bother cutting the heads off a bolt just buy some threaded rod or studs.

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http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique


Posted By: 8122pbrainard
Date Posted: December-19-2007 at 2:55pm
Chris, What problems do you have with tapping cast iron?

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54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<


Posted By: 79nautique
Date Posted: December-19-2007 at 2:59pm
It's extremely hard and breaks taps.

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http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique


Posted By: 8122pbrainard
Date Posted: December-19-2007 at 3:22pm
Originally posted by 79nautique 79nautique wrote:

It's extremely hard and breaks taps.


I've never had the problem with cast. A cast weldment yes - it is hard. Have you found that the breakage is due to sticking the tap? The tried and true lubricant is kerosene but Tap Magic, if you have it is even better.

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/diaries/details.asp?ID=1622" rel="nofollow -

54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
<


Posted By: 87BFN owner
Date Posted: December-19-2007 at 9:07pm
Pete
Tap magic is great stuff. We use it at work and I have not broke a tap yet while using it.

79
I mentioned to use bolts because they are usually cheaper then buying threaded rod. Depending on where you get it from and what length of it you have to buy. But you method will work as well.

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