The Ford Barn

Steve Plucker · 05-03-2020, 07:43 PM

I have several exhaust manifolds that need some tender loving care.

All are useable, some more than others, but no cracks, just some pitting at the front.

Those with cracks I have piled them in the scrap.

I have two issues.

1. I have one that is fairly decent BUT has a hole on the inside on top of one of the tits that accepts the bolts to attach the Intake manifold. Is this fixable by welding up the hole?

2. I have 7 that have the bolts that attach the intake to the exhaust for which have broken off. Besides heating, drilling a hole, and using an EZ-out to try to get them out, any other suggestions before I dive into this project?

Thanks.

Pluck

Jack Shaft · 05-03-2020, 08:12 PM

Ive had good luck preheating and welding cracks with 7018 stick..

Gary WA · 05-03-2020, 08:52 PM

I've had good luck heating the broken studs red glow,hit with water, usually can turn out easy. Been there done that.Using a reverse drill bit

chrs1961815 · 05-04-2020, 09:36 AM

As for thr broken boss on the inside, I just had a thread about that. Suppose you could try brazing the hole but do realize that exhaust can escape past the bolt.

Chuck Sea/Tac · 05-04-2020, 01:10 PM

Sponsored Links (Register now to hide all advertisements)

Ive repaired broken wallowed ect hole for bolting manifolds together, by oversizing the hole, threading, installing a bolt, and cutting flush. Then carefully using a centering starter bit, drill and tap back to the original thread size.

05-03-2020, 07:43 PM	#1
Steve Plucker BANNED Join Date: May 2010 Location: Walla Walla, Washington USA Posts: 6,066	Exhaust manifold problems... I have several exhaust manifolds that need some tender loving care. All are useable, some more than others, but no cracks, just some pitting at the front. Those with cracks I have piled them in the scrap. I have two issues. 1. I have one that is fairly decent BUT has a hole on the inside on top of one of the tits that accepts the bolts to attach the Intake manifold. Is this fixable by welding up the hole? 2. I have 7 that have the bolts that attach the intake to the exhaust for which have broken off. Besides heating, drilling a hole, and using an EZ-out to try to get them out, any other suggestions before I dive into this project? Thanks. Pluck

05-03-2020, 08:12 PM	#2
Jack Shaft BANNED Join Date: Dec 2019 Posts: 1,196	Re: Exhaust manifold problems... Ive had good luck preheating and welding cracks with 7018 stick..

05-03-2020, 08:52 PM	#3
Gary WA Senior Member Join Date: May 2010 Location: Clinton,WA/Whidbey Island Posts: 4,101	Re: Exhaust manifold problems... I've had good luck heating the broken studs red glow,hit with water, usually can turn out easy. Been there done that.Using a reverse drill bit __________________ www.whidbeymodelaclub.com Last edited by Gary WA; 05-04-2020 at 02:59 PM.

05-04-2020, 09:36 AM	#4
chrs1961815 Senior Member Join Date: Jul 2018 Location: Spring Grove, Illinois Posts: 1,371	Re: Exhaust manifold problems... As for thr broken boss on the inside, I just had a thread about that. Suppose you could try brazing the hole but do realize that exhaust can escape past the bolt. __________________ "The more things change, the more they stay the same."

05-04-2020, 01:10 PM	#5
Chuck Sea/Tac Senior Member Join Date: May 2010 Location: Between Seattle & Tacoma Posts: 2,354	Re: Exhaust manifold problems... Sponsored Links (Register now to hide all advertisements) Ive repaired broken wallowed ect hole for bolting manifolds together, by oversizing the hole, threading, installing a bolt, and cutting flush. Then carefully using a centering starter bit, drill and tap back to the original thread size.