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 Top end rebuild or am I in for the whole nine yards.
#808400
04/27/07 06:05 AM
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Joined: Aug 2006
Posts: 20
OP
Need a Spot
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Drivers side camshaft seized in my truck.I have already obtained a replacement head out of a 91 chrysler lebaron.I took the whole assembly and from my understanding there should be no difference please correct if I am wrong.
My truck is a 1989 Dodge raider 3.0 with a 5-speed. The mileage is just over 160,000. Heres my plan because I really like this truck, Is to fix up both heads(recomendations on how to do so?)and clean up the top end parts.
1989 Dodge Raider 3.0L with 5-speed.
In limbo of what to do with it.
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: DangerCart]
#808401
04/27/07 07:52 AM
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Joined: Sep 2001
Posts: 8,557
Forum Moderator
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No help on 3.0 from me, but I like your username. 
87 Raider 4D56td v5MT1
31's..Basically Stock
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: LandRaider]
#808402
04/27/07 11:45 AM
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Joined: Sep 2006
Posts: 406
Mudrunner
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I would go for both heads off of the same vehicle. Even if it's the same cam as the monty, there will be a different ammount of wear. That situation will give the possibility of an unbalanced fuel/air distribution & poor running. I would also not use the other cam from the caravan in your head, as machining tolerances may be too tight ow just sloppy.
Ed
Yankneck = Yankee ingenuity with Redneck stupidity.
"How can I break it better?"
89 Raider 3.0 w/ 31's for now
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: yankneck696]
#808403
04/28/07 06:48 AM
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Joined: Aug 2006
Posts: 20
OP
Need a Spot
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Chances are the car that I got the head from may not be there. When I picked the vehicle to tear apart I selected one with similar mileage and made sure everything turned freely. If need be i'll replace both cams. Would the roller rocker assembly affect cam timming?
1989 Dodge Raider 3.0L with 5-speed.
In limbo of what to do with it.
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: LandRaider]
#808404
04/29/07 02:05 AM
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Joined: Aug 2006
Posts: 20
OP
Need a Spot
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No help on 3.0 from me, but I like your username. Thanks. I like what you've done with your truck. I take it yours was originally a 4-banger?
1989 Dodge Raider 3.0L with 5-speed.
In limbo of what to do with it.
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: DangerCart]
#808405
04/29/07 03:24 AM
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Joined: Feb 2004
Posts: 10,238
Web Wheeler
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Chrysler changed to roller rockers in '90 for the 3.0L Caravan engines. The Montero/Raider 3.0L engines had roller rockers from the beginning in '89. So, as long as you have '90+ Caravan heads, there should be no difference in the valve train - just swap some Montero/Raider cams into the Caravan heads.... but at least check the cam bore clearances.
You may need a couple of longer bolts for the valve covers.
Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: FrankR]
#808406
05/19/07 07:02 AM
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Joined: Aug 2006
Posts: 20
OP
Need a Spot
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If I do the top end am I asking for trouble on the lower end?
1989 Dodge Raider 3.0L with 5-speed.
In limbo of what to do with it.
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Re: Top end rebuild or am I in for the whole nine yards.
[Re: DangerCart]
#808407
05/19/07 10:48 AM
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Joined: Feb 2004
Posts: 10,238
Web Wheeler
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It's hard to say unless you do a compression test.... but to do that, you need to have the heads on the engine and the cams working. If the engine was ok before the cam seized, you could try just rebuilding the heads.... but the main question is "Why did the cam seize?". Lack of lubrication could be from a bad oil pump or insufficient oil quantity - both of which could also have damaged the rod bearings.
Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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