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Front cover gasket?

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Front cover gasket?

Postby jellis » Wed Mar 16, 2016 2:42 pm

Anyone know where i can get the gasket that goes between block and aluminium timing case?

i have oil and water leaking into timing cover through bolt holes.
supposedly the gaskets are different between belt and gear driven....


I may just gasket glue the whole thing back together. any one done this?
cheers, Josh
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Re: Front cover gasket?

Postby stardog » Wed Mar 16, 2016 5:32 pm

This might help you but in the UK
http://www.smsdiesel.ie/en/industrial/i ... 8971172420
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Re: Front cover gasket?

Postby geeves » Thu Mar 17, 2016 4:56 am

Its the jackeroo engine you have so ask your holden dealer
Mu never had a gear drive engine
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Front cover gasket?

Postby jellis » Thu Mar 17, 2016 12:08 pm

i can only get the gasket for gear driven.

I have no option but to use some gasket sealant as motor has to be back in car this weekend.
cheers, Josh
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Re: Front cover gasket?

Postby geeves » Thu Mar 17, 2016 12:41 pm

On the plastic cover for the belt drive there is no gasket. It is not sealed
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Front cover gasket?

Postby jellis » Thu Mar 17, 2016 2:02 pm

im looking for the gasket that goes between aluminium plate and the block.
cast aluminium plate is bolted to block, plastic cover bolts into aluminium plate.

The fuel pump bolts to the cast aluminium plate.


What stardog linked me but for belt driven motor not gear.

holden said no, the one i got in my gasket kit was to suit gear driven and it leaks.
cheers, Josh
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Re: Front cover gasket?

Postby geeves » Thu Mar 17, 2016 4:04 pm

Book does suggest a gasket but no picture of it maybe sealant is the way to go
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Front cover gasket?

Postby stardog » Fri Mar 18, 2016 5:34 pm

if you look at the page there is some writing with 4jg2 click on that and then gaskets and seals it shows a gear drive timing gasket might be the 1 your after.
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Re: Front cover gasket?

Postby turnturn » Fri Mar 18, 2016 7:39 pm

You may find this helpful. In New Zealand these parts can be obtained through the Holden Dealer Network.
From memory this gasket is sometimes metal on some models.
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Re: Front cover gasket?

Postby stardog » Fri Mar 18, 2016 8:35 pm

turnturn is right they are metal gasket because mine leaked water in the Mu before it got a rebuild that muvit got done before I bought the wizard off him.
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Re: Front cover gasket?

Postby greenwolverine » Fri Apr 08, 2016 6:33 am

This is very useful, thanks
I have just taken apart a 4JG2 and the gasket material I found on it is paper or something brittle.

I can now take the part numbers to Isuzu marine to see if they can get me one, touch wood.

I wonder why there are more than one number under 97

So if it is paper, when fitting such a gasket, is it best to coat it with a gasket sealant of some kind?
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Re: Front cover gasket?

Postby jellis » Fri Apr 08, 2016 9:05 am

i am just going to try and seal mine up with a gasket sealant, unfortunately the paper one that we used when i rebuilt the motor hasnt worked and its leaking out.
cheers, Josh
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Re: Front cover gasket?

Postby turnturn » Fri Apr 08, 2016 7:36 pm

Greenwolverine. The different numbers under Item 97 are for the different years of production and/or engine type.

eg. the first entry decodes to -
8-94365-688-0 = the part number
c = not sure
9005-9009 = vehicle production dates May 1990 (9005) to September 1990 (9009)
The 01 means that there is 1 required
The B means that it is for a 4JB1
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Re: Front cover gasket?

Postby greenwolverine » Sat Apr 09, 2016 8:03 am

Vunderbar, thanks

Just to confirm -- the page with the key code says 4JB1/4JG2 but there is a B only at the part number
Would both blocks have similar external diameters?
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Re: Front cover gasket?

Postby turnturn » Sat Apr 09, 2016 6:43 pm

As far as I know the blocks are essentially the same. I assume that the series of different part numbers are for small modifications/suppliers over the years of production. For example they have used both paper and metal gaskets at various times.
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Re: Front cover gasket?

Postby greenwolverine » Sun Apr 17, 2016 3:14 am

Isuzu North America isn't recognizing these numbers. They have no problem getting gaskets for the gear-driven engines but the holes are in the wrong places compared to the gasket for the belt driven G2
Is there a dealership I can contact in NZ?
I buy a lot of my parts from the UK so it's no big deal to pay a bit of postage.

I have tried to do everything right on my engine rebuild so far and don't want to take a chance at what seems to be a crucial sealing area
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Re: Front cover gasket?

Postby geeves » Sun Apr 17, 2016 3:01 pm

try www.4x4isuzu.com Dont know if they ship to USA but they do to Australia no problem
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Front cover gasket?

Postby greenwolverine » Sun Apr 17, 2016 10:27 pm

They were very helpful and I received a genuine Isuzu gasket that fits my front plate

The part number on the Isuzu package is 8-97129429-1
I am typing it again to make sure I do it right: 8-97129429-1

BTW I am thinking of popping the front crank seal into the front plate while it's off the block.

That way I can put pressure downwards in a controlled way
Any objections?
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Re: Front cover gasket?

Postby nivaman » Wed Jun 01, 2016 8:43 am

Best to do it when you have it apart, good plan.
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