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Re: FUBAR 528e, Gauging Condition of the M90
Posted: Dec 07, 2023 11:40 AM
by austin8753
wow, cool find. those are super scarce in today's world.
Re: FUBAR 528e, Gauging Condition of the M90
Posted: Dec 07, 2023 1:02 PM
by tschultz
Fyi, there is a cheap headgasket if you don't want to pay $200 for a new one.
AJUSA brand 10043410 is for the equivalent m90 hg with steam holes and is less than $100. I thought about buying it but decided to go with oem on my latest m90 engine (re) build.
Will be. Curious to see if that head is original 81 marking or a later head. Does it have the m90 text behind the front timing cover or is it a later replacement head?
Re: FUBAR 528e, Gauging Condition of the M90
Posted: Dec 07, 2023 2:53 PM
by LeiseyJr
tschultz wrote: Dec 07, 2023 1:02 PM
Fyi, there is a cheap headgasket if you don't want to pay $200 for a new one.
AJUSA brand 10043410 is for the equivalent m90 hg with steam holes and is less than $100. I thought about buying it but decided to go with oem on my latest m90 engine (re) build.
Will be. Curious to see if that head is original 81 marking or a later head. Does it have the m90 text behind the front timing cover or is it a later replacement head?
The date code is 1980 on the head and the stamping on the block is September of 1981. (using this thread to decode the stamping on the block
https://bigcoupe.com/phpBB3/viewtopic.php?t=32013) I'll have to check if the head has the M90 stamp behind the timing cover.
Re: FUBAR 528e, Gauging Condition of the M90
Posted: Dec 07, 2023 3:25 PM
by LeiseyJr
It does say M90 on the head
Re: FUBAR 528e, Gauging Condition of the M90
Posted: Jul 07, 2024 10:11 AM
by LeiseyJr
So it was a M90, had a seized oil ring on 5 and coolant passages were too clogged as well as a bad headgasket.
I put the 8:1 back in, spent 4 days swapping that motor and the other one back in, in total around Christmas.
Took it to Barber, broke another front strut housing. Hoosiers were gripping too good. This led to me to get Ground Control coilovers for the car. I honestly hate them, but work has been busy so theyre still on the car. Just took it to Road Atlanta again in June and no real issues.
Current goal is get a 10:1 back in the car and revisit the suspension. Eituer put in the old stuff or put in Double Adjustable Race Inserts in these housings.
Re: FUBAR 528e, Gauging Condition of the M90
Posted: Jul 07, 2024 1:33 PM
by thrty8street
LeiseyJr wrote: Jul 07, 2024 10:11 AM
So it was a M90, had a seized oil ring on 5 and coolant passages were too clogged as well as a bad headgasket.
I put the 8:1 back in, spent 4 days swapping that motor and the other one back in, in total around Christmas.
Took it to Barber, broke another front strut housing. Hoosiers were gripping too good. This led to me to get Ground Control coilovers for the car. I honestly hate them, but work has been busy so theyre still on the car. Just took it to Road Atlanta again in June and no real issues.
Current goal is get a 10:1 back in the car and revisit the suspension. Eituer put in the old stuff or put in Double Adjustable Race Inserts in these housings.
What do you hate about the Ground Control coilovers? I was thinking of picking up a set but have not seen much information about them.