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The CJ3A Page Forum › Willys CJ-3A Technical Knowledge Base › Tech Talk › Space between motor and firewall

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Space between motor and firewall (Read 1347 times)

PaulS 3A Guru Offline Still Plays With Jeeps Posts: 271 Location: Edmonton, AB Joined: 04/22/13 Gender:	Space between motor and firewall 04/24/13 at 15:50:21	Print Post
	How much space should there be between the back of the motor and the firewall? My '49 CJ3A has a CJ2A motor in it, and a repro tub from the 80's that isn't an exact match to a CJ3A. The spacing appears to be less than half an inch at the top of the motor. Is that about right, or is there something odd about my configuration? (Well, I know there's something odd about it--I'm just wondering how odd...) Thanks, -Paul


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garage gnome Flatfender Master 2013 Sponsor Member Offline Rustologist Posts: 1931 Location: Chester Joined: 02/16/12 Gender:	Re: Space between motor and firewall Reply #1 - 04/24/13 at 16:13:16	Print Post
	It is tight, maybe 3/4" or so on mine. It varies, so I wouldn't worry about it.

	Nate in Western MA 1953 3A #3268, The Jalopy, '47 2A Wheelin' rig, '49 3A, #37071, unmolested, bone stock named Ted
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Macgraham Flatfender Enthusiast Sponsor Member Offline Still Plays With Jeeps Posts: 187 Location: western arizona Joined: 01/15/12 Gender:	Re: Space between motor and firewall Reply #2 - 04/24/13 at 16:45:34	Print Post
	I just measured mine and there is 1.5" between the head and the firewall. I have an original 3A tub.


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garage gnome Flatfender Master 2013 Sponsor Member Offline Rustologist Posts: 1931 Location: Chester Joined: 02/16/12 Gender:	Re: Space between motor and firewall Reply #3 - 04/24/13 at 17:06:58	Print Post
	Ok, yeah, Mac is right. I looked at this picture and it is pretty big. I couldn't remember how much it was. this os of an original body. My reproduction body on my '53 looks to be about the same too.

	Nate in Western MA 1953 3A #3268, The Jalopy, '47 2A Wheelin' rig, '49 3A, #37071, unmolested, bone stock named Ted
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PaulS 3A Guru Offline Still Plays With Jeeps Posts: 271 Location: Edmonton, AB Joined: 04/22/13 Gender:	Re: Space between motor and firewall Reply #4 - 04/24/13 at 17:52:09	Print Post
	Nate--from that picture, it looks like there is a recess in the firewall behind the engine. Mine certainly doesn't have that. (Not a great picture--but it's the best of that area that I happen to have on my computer here right now.) -Paul


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Macgraham Flatfender Enthusiast Sponsor Member Offline Still Plays With Jeeps Posts: 187 Location: western arizona Joined: 01/15/12 Gender:	Re: Space between motor and firewall Reply #5 - 04/24/13 at 21:38:39	Print Post
	Looks almost like a different tub Something is definitely different from my 3a. do you have a 3A engine mounting plate on you're 2A engine? Could be the engine isn't sitting right in the frame. I had to deal with this on my 3A and there are a lot of possibilities. Make sure all you're stuff us 3A. The engine doesn't matter as long as you have the 3A mounting plate on it and you're frame is 3a. My L134 is 1944 Ford Military but with the 3A plate it fit perfectly.
	« Last Edit: 04/24/13 at 21:49:35 by Macgraham »

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PaulS 3A Guru Offline Still Plays With Jeeps Posts: 271 Location: Edmonton, AB Joined: 04/22/13 Gender:	Re: Space between motor and firewall Reply #6 - 04/24/13 at 22:39:26	Print Post
	It's definitely a different tub--this one is from the early 80's (or so). I have no idea what the mounting plate is. How do I check that? -Paul


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