compression ratio

[lowride stepside]

Could anyone tell me what the compression ratio is on a 1275 morris ital please

[bmcecosse]

Maybe only 8.8 to 1.

[JOWETTJAVELIN]

Maybe only 8.8 to 1.

'Only' (!!) - Enough to require and reap the benefits from premium grade fuel.

P.S. Where have you been hiding lowride? I've missed your quips about the 'original Red Bull' and so on.

[daveyl]

I have a Haynes 'Ital 1.3' manual to hand. The low compression engine is 8.0:1 and the High comp. is 9.4:1

[lowride stepside]

supercharging and wondering if i need a de comp plate, doe's anyone know the psi i should expect from a standard 1275

[lowride stepside]

Maybe only 8.8 to 1.

'Only' (!!) - Enough to require and reap the benefits from premium grade fuel.

P.S. Where have you been hiding lowride? I've missed your quips about the 'original Red Bull' and so on.

ah you missed me , been moving house , working hard , and looking at forced induction .
picked up a eaton m45 off ebay for a song that was fitted to a 1098 so now i'm trying to adapt it to my carb

[JOWETTJAVELIN]

That will be interesting - but make sure the engine is tip-top before you do!

[bmcecosse]

1975 Marina 1275 engine was indeed just 8.8: 1. Maybe it was uprated slightly or the Ital. Ohhh yes! This exciting article tells all http://www.uniquecarsandparts.com.au/ca ... s_ital.htm So 9.4 it is then - too high for a compressor I fear.

[lowride stepside]

Cant be to much wrong it don't smoke , knock or rattle and pulls 80 with an external sun visor fitted , n would definatly go faster if i took the damn thing off , but style is often a compromise to efficiency.

[lowride stepside]

Bmc you are a wealth of info . decomp plate it is then