uprated pistons

[BazGF8]

yup standard size but higher tensile strength apparently .asked about 14 mm conversion but mad money and not needed for my level of tune.

Yeah thats true , can you remember if they were cosworth or arp? Sorry for jumping in on the thread , just interested to see what lads have done with them

 

[tommy 555]

all cossie I think baz

 

[BazGF8]

all cossie I think baz

Think thats were I went wrong on mine, arp 220,000psi and Cometic gaskets

 

[tommy 555]

might have been ok but for the high compression of your motor baz . would thicker headgaskets relieve the compression levels at all

 

[BazGF8]

might have been ok but for the high compression of your motor baz . would thicker headgaskets relieve the compression levels at all

It would drop a bit but not much. Its not a bad thing, actually makes for a very responsive engine, just means restricted boost/ignition timing wise.
To get it to the correct compression , machine the heads by opening out the chambers or machine the top of the pistons, few ways it can be done and then obviously a proper headstud and gasket combo

 

[tommy 555]

jesus thats not a cheap job at all .

 

[BazGF8]

jesus thats not a cheap job at all .

Can be done on the "cheap" though