Thread: 186 Engine problem NEED HELP

Originally Posted by 30t of coolness

As long as your engine hasn't been reco'd by GEM engines already you should be fine as I believe GEM takes all the bores out to max oversize so when they wear out the're landfill.

They generally take them out to 60 thou straight away, but you can do an 80 thou over rebore - the pistons and rings are available, but it is a bit hit and miss going this far over, there is plenty of meat in the bores, but the castings can be offset slightly, so you run the risk of wrecking the block - a mate used to go straight to 80 thou over for his speedway engines, but it was a 50/50 chance that the block would survive the rebore - best stick to 60 thou...

Ok Got my hands on a compression tester! did a bit of a test.

Got the following results.
Cyl 1 - 120psi (with a dash of oil added got 160psi)
Cyl 2 - 140psi (oil 170psi)
Cyl 3 - 120 psi (oil 170psi)
Cyl 4 - 150 psi (oil 190psi)
Cyl 5 - 140psi (oil 170 psi)
Cyl 6 - 130 psi (oil 170 psi)

They are all well and good but what does it mean? What should I expect from a 186???

the Gregorys manual I have for a LH /LX torana lists compression vaues of 130 - 170 psi ( in a new engine with 20 psi variation) so yours seem fine get some fuel into the carby & fire her up !

Originally Posted by debruiser

It is the 2.6 model. Where would I find the pump?

hi the electric pump can be at the side of main tank and you would hear it tick jim

thatt do it, facet pump onto it fix the squeeker and your away

Those compression figures look fine - I would go with what you have, it will have plenty of like left in it yet. Do the fuel pump and alternator, and you should be sweet.

Cheers - Gav

just bought a new fuel pump! $140 bucks later.....

Also put a new water pump on order! Wait for the price..... $30! What that hell????? it's crazy I tell you, no logic at all!

Originally Posted by debruiser

just bought a new fuel pump! $140 bucks later.....

Also put a new water pump on order! Wait for the price..... $30! What that hell????? it's crazy I tell you, no logic at all!

Well that fuel pump didn't fit.... had to order in a different one! Put that on and away she went (after I pulled the sump off and got the floaties out, replaced the sump gasket and change the oil filter)

I think she needs a tune up, when you stop the throttle open it stalls. It's also blowing a bit too much smoke

Any suggestions?