Engine build

[Alex6373]

I have had issues with this motor for a long time , short history , the

1800 turns out to be a 1700.
I purchased 15 years ago A&A 1900 set .
I thought 1800s would not fit a 1700 case unless machined? They slipped in so i thought i had a 1800!.
Wrong !

So I calculated wrong when i set this up !. I am open to suggestions .
The motor ran but was gutless , its a automatic and drives nice but a little more on some hills would be nice .

Also it is hard to start as it seems the timing is jumping around leading me to think that endplay was a factor , but upon inspection so far its very tight . So maybe distributer drive may be worn out?
When starting it sometimes backfires or is hard to start !










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Wildthings wrote:
The "0" mark should be TDC and the "I" mark should be 27° BTDC, though there are variants out there.

[Alex6373]

There are sealing washers on the heads are these required on type four ?
If i remove them i will bring my compression up into range ?
Thanks for your help !

[aeromech]

All of the engines I deal with are built by professionals. Too much at stake for guesswork
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[Alex6373]

I have found out the problem .

The motor is a 1700 which has been machined out to except 1800 pistons .

When i installed the piston set i measured the deck hight and ….. then i installed

The cylinder head Shims ( finding out now that these are not used ) .

This caused my calculation to be out and have very low compression.

I will do more measurements and make sure i have no vacuum leaks .

I might have new shims (10mm) i think this will bring my compression up!

Thanks for everyone’s help !!!!!