Cracked intake manifold (1 Viewer)

[Tacoman99]

Hey

My 71 FJ started running rough. I found that the manifold flange was cracked near one of the studs and into the plenum. I used some high temp silicone as a temporary fix. It is completely cracked through and leaking. A couple of questions:

Does anyone have experience using the aluminum brazing rod? I have seen a demonstration and it looks easy to use. It is said to be as strong as the aluminum but I have my doubts. I found very little online other than "its stronger than the base metal". In real life, can this actually work.


If I go with a replacement does anyone know the range (by year) of manifolds that would fit? It's used off road only so smog compliance is not a real issue. I noticed there are wide and narrow runners. I think either would be ok, with a preference for the narrow one. Since its a ranch truck, it spends a lot of time at idle and low speed. If I could pick one up at a reasonable price that would be my preference. I have looked at a couple of the forum vendors and on ebay, found little and found nothing reasonable.

Any help would be appreciated.

John

 

[JackA]

Post an ad in the wanted section. Intakes are plentiful.

 

[Tacoman99]

Jack
I didn't notice the "Classifieds" pull down tab at the top until you got me looking. Sometimes the obvious to hard to see. I put up an ad, see if there is anything available.
Thanks
John

 

[upperblack]

I was going to post this one up for sale in the classified section. I got 2 in a set and only used one on my 69 and have this one left over.
Not sure if it will fit your set up.
I honestly have no clue on price (maybe others can comment) and I've also never used it. PM me if interested

 

[Spike Strip]

I've used the Aluminum brazing rod to fix cracks in the underside of the intake where it bolts to the exhaust. Worked fine for that, and seems strong enough, but I don't know about a spot that has torque on it. I would have that flange alum welded by a pro. If you try the brazing rod, heat the intake in an oven at 250* for 20 mins, first. The brazing flows much better then.

 

[antFJ]

I just sold two 71 intakes for 40 a piece. They are out there.

 

[antFJ]

Upperblacks intake is not for your year

 

[Tacoman99]

Spike, You are probably right. It's best used for something that is not loaded. It seems that these manifolds are not hard to find. I thought it would be more of a problem.

Upperblack, I put a notice up in the classified section and got an offer. If that falls through I will get back to you with a PM. It sounds like we will need to verify that it will fit anyway. Thanks for the interest.

 

[65swb45]

Did you see that the one pardion posted is sitting in front of A WHOLE SHELF of them? My shelf of intakes used to be that big too.

 

[Tacoman99]

I saw the shelf. I think he may be trying to corner the market.

 

[65swb45]

I saw the shelf. I think he may be trying to corner the market.

Trust me, there are FAR better things to corner the market on. John and I have just been in this 'cruiser thing for 30 years, and stuff just kind of happens. He'll set you up with a good one.

Best

Mark

 

[Fast Eddy]

I have a spare that I stopped bringing with me to swap meets. Everyone has a spare, so it seems.

 

[Tacoman99]

Trust me, there are FAR better things to corner the market on

They may turn to gold someday. You never can tell what people will want in 20years.

I did talk to Pardion and we have a deal in the making. Much better route than trying to repair the old one.

 

[65swb45]

They may turn to gold someday. You never can tell what people will want in 20years.

I guess that means you should hang on to your cracked one!