1992 and not sure what to do

[paul.hilton]

I have been driving my 1992 SHO as a daily driver for about 2 years. 6 months after buying her, I blew the speedometer out doing unforsaken speeds on I-25. The clock stopped at 190,000. I have done some repairs that seemed to keep her in tip top, 0-60 in 6 seconds condition. The past few months, she had started noticeably, blowing smoke at start up, Then weeks later I noticed she was smoking bad at acceleration.I had been burning 2 quarts every 100 miles. I have used every additive in the book. Ofcourse they work a week or 2 then she's, smoking again. Even though I was having the smoking problem, I didn't seem to loose any power. So, 2 weels ago I planned to break down the engine and use the "PHEONIX PROJCET" as a reference, and replace seals. I now have the heads in my yard and the car on jackstands in my drive way. A friend of mine, an engine rebuilder, has been coaching me says I should replace the rings, have the heads machined, besides what I oreiginally planed to do, "A 60K". This is what is holding me up. I have all the parts to do a "60K", but i want my SHO to be with me another 2 or more years, I don't even know for sure if my heads need re-surfacing. Does anyone have any suggestions, or similar experiences? Remember, currently I have to bum a ride to work and else where. Also, I can't afford a new car, and I wouldn't consider buying another used car, I HAVE A RUINNING SHO, that I know like the back of my hand. I really need any info that may help, why I have my car in pieces.

 

[91PDXmocha]

you should do a compression test and find out if its rings or valve seals.

Have the heads checked out, new seals installed maybe valve job. do not have the heads machined, or the absolute minimum if anything.

If you have to do the rings. pull the motor out and do it on a stand. or just drop in a jy 3.0.

 

[Sho Amo]

i agree completely with what he said. Im almost positive its your valve stem seals though. Theres some guys out your way that might have the rotunda kit, just post in the co section.

 

[rubydist]

it is way more likely that it has a valve stem seal problem than a ring problem (typical SHO blocks still show cylinder hone marks at 200k miles).

I have some parts that may help you - PM me if interested.

 

[Racer X]

My money is on valve stem seals.

I had 22 out of 24 that were bad when I refreshed my heads last summer.

 

[lowc]

x3 on stem seals. i wouldnt worry about having the heads mechined

 

[paul.hilton]

Okay. I did the valve job, but per my friends advice I took the Heads for resurfacing. I also pulled the pistons and took them to the machine shop also. I have all gaskets and seals, belts, plugs, etc. Now, I forsee issues. 1. I plan on coating the block for the Head gaskets with Black RTV, then K&W Copper, is this good? 2. I also will be putting on new rod bearings, any more suggestions? 3. How exactly do I re-install the Crankshaft pulley and bolt, with the timing set? Should I even have the timing on the cams set? I appreciate the replies so far, BUT PLEASE GIVE ME MORE ADVICE. Does anybody have any PDF's or step by step instructions to help me out?

 

[paul.hilton]

The pulley is the biggest problem in my mind. To get it off was b---. My pulley bolt is rightey tightey, unlike alot of post that i've read. Please help.

 

[rubydist]

the crank pulley bolt is long enough to pull the pulley on with it - all you have to do is get it started correctly. you may need to polish the crank just slightly to get rid of any rust/crap that is on the end of the crank and also clean out the bore of the pulley.

 

[93rev2sev]

Correct me if I'm wrong SHOForum, but there should be no RTV of any kind applied to the head-to-block mating surface. It should cleaned as much as possible and the only thing between the heads and block should be the head gasket.

 

[luigisho]

Correct me if I'm wrong SHOForum, but there should be no RTV of any kind applied to the head-to-block mating surface. It should cleaned as much as possible and the only thing between the heads and block should be the head gasket.

Especially since the mating surface should be mint with freshly decked heads. I can't think of a motor that I would use rtv at the heads.

 

[lowc]

Okay. I did the valve job, but per my friends advice I took the Heads for resurfacing. I also pulled the pistons and took them to the machine shop also. I have all gaskets and seals, belts, plugs, etc. Now, I forsee issues. 1. I plan on coating the block for the Head gaskets with Black RTV, then K&W Copper, is this good? 2. I also will be putting on new rod bearings, any more suggestions? 3. How exactly do I re-install the Crankshaft pulley and bolt, with the timing set? Should I even have the timing on the cams set? I appreciate the replies so far, BUT PLEASE GIVE ME MORE ADVICE. Does anybody have any PDF's or step by step instructions to help me out?

did you change the piston rings and hone the cylinders while you have it apart? yes you should set the cams. although you shouldnt need to hone the cylinders i would do it anyways just for a piece of mind and like rubydist said the crank bolt should be long enough to start a few threads if not a few taps with a rubber malet will get it on far enough to start the bolt