Valves on 258 - JeepForum.com
 
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post #1 of 7 Old 09-11-2002, 02:09 PM Thread Starter
CJ7Danny
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Join Date: Sep 2002
Location: Atlanta (Norcross)
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Valves on 258

Just picked up an 85 CJ7 Laredo with the 258 a couple days ago. This will be the first jeep I've had, among the many Toyota's I've had. That being the case, I haven't got around to purchasing a service manual for it.

Does any know of any technical papers written on adjusting the vavles, or can give me quick run down on whats the best valve clearences for this engine? Also, a sequence would help as well.

Thanks,

Danny


Dano
85 CJ7 Laredo Hard Top
33" BFG M/T
T176
Moser One Piece Axles
D300, D30, AMC 20, 258 ci
Motorcraft 2100 swap
Nutter By-Pass
Custom front bumpers
Custom Rear bumper/tire carrier
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post #2 of 7 Old 09-11-2002, 05:48 PM
CSP
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Unfortunately the valves on a 258 are not adjustable. They use a bridged pivot and there is no adjustment possible with them.
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post #3 of 7 Old 09-11-2002, 07:52 PM Thread Starter
CJ7Danny
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Thanks CSP... So this tells me I have another problem, besides a valve not doing what it should. I'm not actually sure it's an excessively loud valve tick that I'm hearing. I really haven't had an opportunity to investigate.

Whatever the sound is...it better hold out for a 5 hour drive! I purchased this thing in Russellville, KY and I have to drive it back to Atlanta. Wish I had a friggin trailer!

Dano
85 CJ7 Laredo Hard Top
33" BFG M/T
T176
Moser One Piece Axles
D300, D30, AMC 20, 258 ci
Motorcraft 2100 swap
Nutter By-Pass
Custom front bumpers
Custom Rear bumper/tire carrier
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post #4 of 7 Old 09-11-2002, 09:38 PM
HighCountry
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1986 CJ7 
 
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Location: North East Texas
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Lucky maybe?

It could turn out to be an Exhaust leak from a cracked manifold or leaky gasket...

Bruce
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post #5 of 7 Old 09-11-2002, 09:39 PM
thecarman
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Re: Lucky maybe?

Quote:
Originally posted by HighCountry
It could turn out to be an Exhaust leak from a cracked manifold or leaky gasket...

Bruce
Yeah I'd check that.

1994 Jeep Wrangler 2.5L (White)
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post #6 of 7 Old 09-11-2002, 11:33 PM
CJ7Jeff
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Join Date: Dec 2001
Location: Oklahoma
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Sounds like a real heap! Ha ha! Just kidding. Congratulations on your purchase. You will soon realize that you will be up until all hours of the night searching for anything Jeep related on the internet.

As far as the ticking noise, I wouldn't discount it being a timing chain. Mine has made a ticking noise since I have had it and I have been over the valves. I am sure I need to do a chain. One of these days.

Good luck with the Jeep. Live it, Love it, and whatever you do, never, ever, sell it.

Out

'85 CJ7 258 w/Weber Carb and Nutter Bypass. Dana 44's F&R, 3.73 gears with Trac-Loc rear. Always looking for peoples $0.02.
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post #7 of 7 Old 09-13-2002, 07:58 AM Thread Starter
CJ7Danny
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Location: Atlanta (Norcross)
Posts: 58
Everyone,

I quite sure I can rule out the exhuast. I wouldn't consider myself by any means a master mechanic, but I'm pretty saavy when it comes to turning the wrenches.

The timing chain might be a reasonable concern and culprit for this noise. If it's not that, it's got to be something in the valve train. I'll check it out after I get back from Colorado next week.

Just in case I have to dive into that timing chain...anyone care to help? CJ7Jeff? (Actually...if he's around, he doesn't have a choice!)

I'm livin' it....lovin' it...and as right now, the only way it's going away is if someone steals it! And if that happens, they had better pray to GOD, Allah, Jesus, and every other religious idle, that I don't find them!

OUT

Dano
85 CJ7 Laredo Hard Top
33" BFG M/T
T176
Moser One Piece Axles
D300, D30, AMC 20, 258 ci
Motorcraft 2100 swap
Nutter By-Pass
Custom front bumpers
Custom Rear bumper/tire carrier
CJ7Danny is offline  
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