Metro Turbo Engine Myths
Turbo Mini Forums

Whoa, that's a fantastic collection of information there Tom! It's certainly a lot of the questions I had, and wanted to ask about the A series engine.

Thanks :)

it wasnt a loada old bollocks after all Tom
apparently the metty turbo diff is the one without the thrust blocks
this could lead to busted diff pins and planet gears

Edited by Lone Wolf on 17th Jun, 2007.

Warning:Stig in Training


The Turbocharger:God's Finest Minute

Can we stop spamming this post please folks, its supposed to be as a reference, lets try not to clog it up with shite, cheers...............

It makes sense that the MG cam would be ideal in the turbo. The boost would calm it lower down (check! ) and the extra exhaust duration would allow it to empty "better" timed in earlier would allow the inlet to shut in the right place and give a good gas pulse for the exhaust whilst still allowing it enough time to get out at high revs. Be interesting to know what a bog standard metty turbo would put out with an MG cam and no other mods. My bet is quite a bit more.

Bugger off, I'm getting there.

If the standard turbo engine didn't have piston cooling jets, where did they originate from?

Simon

At the end of each race, people ask me what my oil pressure was like. It's only then that I think to check.

http://www.thecustardbullet.com/

People making and installing jets themselves. No A or A+ block ever came from the factory with oil cooling piston jets.

The group "A" factory motors were fitted with them.

WWW.TURBO-MINI.COM

Sorry to bump an old thread, but what about the extra oil galleries in the main bearings on the block?

Was that a turbo only feature? or just something that some engines had and some didnt?

All the standard 1275 blocks I've stripped down had just 1 oil gallery hole in each main bearing race. the 1 engine I stripped which I KNOW was a genuine turbo motor had 2 oil gallery holes in each main....

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

Anything more to add to this thread as i feel it is unfinished ?

Will my project ever be finished !!? hopefully you guys can help !
Its only been like 10 years in the making and I'm only just assembling my engine!

resurrect the dead. I thought all the 1275 blocks were one in the same Seeing as I have a few supposed "Turbo" blocks striped I am going to check the fact below.

Interesting factoid if true.

Own the day

What piston CR would you recommend for 1275, using GT1750 turbo and what make of piston ?

i recomend posting in the corrects section

but to answer your question a CR between 8:1 and 9:1

Yes i moved to the darkside

Instagram @jdm_brett