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EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 9:12 am
by themixer
Looking for the bolt size/thread needed to block the EGR on my exhaust manifold. I forgot to take it with me this morning to work and the fastener store isn't open on the weekend! Would really appreciate the help.
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 9:37 am
by 1988GTU
If it's the pipe that goes into the exhaust you are looking to plug, then that should be an Oxygen sensor thread. Which is M18 x 1.5. Same as a spark plug for that engine as well.
EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 10:06 am
by themixer
The thread does look different than an oxygen sensor and a spark plug
More course of a thread, can anyone else confirm this ? My 3400 was out of 2001 venture van, but from what I read online they were all the same
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Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 11:48 am
by 1988GTU
I know that is what I used for the manifold, but I had no information on where the 3x00 came out of. In my case, it was likely from a car not van.
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 12:04 pm
by themixer
http://www.milzymotorsports.com/2000-20 ... elete-kit/
this is the closest information i have been able to find but the thread of the bolt isn't listed
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 12:34 pm
by 1988GTU
Same thread.
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 10:44 pm
by themixer
managed to make it to the store tonight, i can assure you it is nothing even close to a spark plug. Will post some pics asap
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 13, 2014 11:10 pm
by 1988GTU
Does it have a bushing to reduce the dia' of hole still in place?
EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 4:49 pm
by themixer
It did not have a bushing at all
The thread seems to be a 1/2 inch plumbing cap
I just drilled it out to better fit into the hole
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Re: EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 7:09 pm
by 1988GTU
I didnt use those mani's. Cool that you figured it out tho!
Re: EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 8:09 pm
by themixer
i wanted the larger 3400 headers, if i came this far of putting this motor in might as well have some flow
Re: EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 8:55 pm
by Money pit Beretta
Wait, you would like to have the 3400 manifolds? I have a set with the cross over pipe too. Also have the heat shields for them.
EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 9:53 pm
by themixer
Why don't i want them ? Other than the connection to the downpipe ?
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Re: EGR exhaust manifold block off bolt
Posted: Thu Jun 19, 2014 11:36 pm
by 1988GTU
themixer wrote:i wanted the larger 3400 headers, if i came this far of putting this motor in might as well have some flow
That rear mani might hit the rack. The o2 will at least smack it.
Re: EGR exhaust manifold block off bolt
Posted: Fri Jun 20, 2014 10:04 am
by Money pit Beretta
Just for fun I was thinking about a custom cross over. Shouldn't be all that hard for a good welder to do. Take a 3400 pipe, reduce it down at some point and weld on the 3100 pipe.
The point: more of an equal flow from each side of the engine. By far not the best, but it should be at least helpful.
That I know of having a 3400 manifold on the "front" side and a 3100 on the rear would be a first.
Hell I'm willing to try it if no one else is. Anyone want to make the cross over for me? I have the 3400 cross over and I'm will to pay for the 3100 parts and shipping. Guess the heat shield could be a small problem though.