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post #1 of (permalink) Old 05-30-2000, 08:04 PM Thread Starter
 
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burnt ex vavle, options?

so my buddys 1992 sami has a burned ex valve on #1.

what are the options? the other cylinders all have 110-120 dry comp numbers.

where can we order the valve and the upper gasket kit, or what can we expect to pay for a rebuilt head?

the engine has 100K miles on it, should we look at a cam replacement also?
this is really the first over head cammed engine ive spent much time with, so im not sure what a common fix is for this.

thanks!

OzarkJeep
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post #2 of (permalink) Old 05-30-2000, 10:50 PM
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Re: burnt ex vavle, options?


Good compression throughout the head should be at least 160 . With it as low as 110 on the "good" cylinders, it may be time for a complete 'head job'.

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post #3 of (permalink) Old 05-31-2000, 06:39 AM Thread Starter
 
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Re: burnt ex vavle, options?

how will a "head" job...hehehe
increase compression? is it likely leaking from the other valve seats/stem seals?

I can run another leakdown on teh rest of the cylinders to see, but Id just assume with that mileage its a piston ring seal problem?

please tell me whats involved in a complete "head" job...haha



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post #4 of (permalink) Old 05-31-2000, 08:35 AM
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Re: burnt ex vavle, options?

Call the auto machine shops in your area for prices around here they are often associated with a auto parts store. Some only do heads. The cheapest is to buy a single valve and lap it to the valve seat. Don't recommend that. Do a compression test or leak down test before removing the head. If you have low compression squirt oil into the cylinder to see if pressure rises. (rings or
valves) Check the oil pressure with a PSI gage. (This will tell you if bearings are failing) When head is off the block visual check the cylinder walls and measure the taper. Now you decide if it makes sense to rebuild the short block along with the head.

Head rebuild includes checking valve stem clearance and replacing valve guides. Grinding valves and valve seats and replacing as needed. Leak test or dye penetrate test for cracks. Check for warped head and resurface as required. Visual inspect cam and measure bearing clearance. Warped head effects cam bearing alignment it can be fixed but is often reason to reject the
head for rebuilding. The machine shop or head shop will tell you if it is beyond repair and sell you a rebuilt head. They often keep the old head.

post #5 of (permalink) Old 05-31-2000, 08:42 AM
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Re: burnt ex vavle, options?

I know who has what you need. Call it a valve job, or a rebuilt head, they have it for less. Their head has a 3 way grind on the valves, the heads are milled and come complete with all the gaskets to do the job!

DaveAZ

http://www.asianautopartsofaz.com/suzuki.html

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post #6 of (permalink) Old 06-01-2000, 06:32 AM Thread Starter
 
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Re: burnt ex vavle, options?

thanks for the info guys!

that asianaz autoparts have got some good prices from what ive seen!

well do a leakdown test this weekend to determine the state of the ring seal, and from there hopefully decide what to do.

I like the $ head with teh torquer cam, any one using this? is it noticeable?

also, where are some links to a 1600 swap/ install kits, how much does it generally cost to make this transistion? if it isnt too bad Ill suggest swapping instead of dumping $1200 into 1300 mill.


thanks again!


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post #7 of (permalink) Old 06-01-2000, 12:10 PM
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Re: burnt ex vavle, options?

If you want to go 1.6 check out Trail Tough, they will fix you up.

DaveAZ

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