LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

The dreaded head gasket replacement

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Old 08-26-21 | 04:40 PM
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No broken timing belts. Both were mechanic error on previous work! (one broken camshaft and one loose camshaft gear).


Rich
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Old 08-27-21 | 11:46 AM
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Originally Posted by BNastee
No broken timing belts. Both were mechanic error on previous work! (one broken camshaft and one loose camshaft gear).


Rich
Wow! I've never heard of a camshaft breaking, that's crazy stuff. However, I did see where a club member posted photos of a block literally breaking into several pieces, that was really wild. Btw, does the 1uz have an aluminum block? Thanks.
Old 09-27-21 | 04:26 AM
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Dffferent camshaft timing tube sizes caused some problems. Deep discussion...red/green....ugh.

Engine Mechanical EM-50 for more info.
Old 09-30-21 | 02:51 PM
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Originally Posted by BNastee
Dffferent camshaft timing tube sizes caused some problems. Deep discussion...red/green....ugh.

Engine Mechanical EM-50 for more info.
So Rich, were the camshafts "replaced" from previous work? If so I wonder why anyone would replace the stock cams unless it was to beef up the power, some guys don't mind putting in mods, not something I would ever do though.
Old 10-05-21 | 04:16 PM
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I was the problem on this particular car. I did the camseals and the intake cam broke after about 200 miles. I destroyed that head limping the car home :-(.
Old 10-07-21 | 02:45 PM
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Originally Posted by BNastee
I was the problem on this particular car. I did the camseals and the intake cam broke after about 200 miles. I destroyed that head limping the car home :-(.
My guess is that it was a "98-00" LS, with the VVTI, would that be correct?
Old 10-07-21 | 02:50 PM
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Originally Posted by LS400FAN
My guess is that it was a "98-00" LS, with the VVTI, would that be correct?
Correction, I just read your previous posts and they were in fact VVTI engs., the good thing about my '95 is that I don't have to worry about the VVTI's and that's perfectly ok with me.
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