Tuned 1275 engine build

b1zbaz · Post by **b1zbaz** » Fri Jan 04, 2013 10:37 pm

Oh yeah I joined them the other week trying to track down a mini but no luck and yeah they do as I told them I own a Midas

Stuart · Post by **Stuart** » Fri Jan 04, 2013 10:40 pm

b1zbaz wrote:Oh yeah I joined them the other week trying to track down a mini but no luck and yeah they do as I told them I own a Midas

Geoff was talking to apbellamy.

apbellamy · Post by **apbellamy** » Sat Jan 05, 2013 5:48 pm

Geoff Butcher wrote:
apbellamy wrote:If you want a reliable and driveable 100bhp, turbo it.

A 100bhp n/a engine won't be a pleasant drive in comparison to something like an n/a mg metro engine.
Do TMF know you're here?

Ha ha. Not been on there much for years.

On the turbo front though - an MG cam, well ported head, compression ratio at about 8.8 - 9:1 and about 12 psi will drive extremely well. Much more than that and it starts to get a little silly (The last engine in our metro van 200bhp+ on a turboed 1300). Fine on the drag strip, but a little bit of a handful on the road.

EDIT: The M45 based supercharger kits are not great. More than about 7psi of boost and all they generate is heat (and not more power).

Geoff Butcher · Post by **Geoff Butcher** » Sat Jan 05, 2013 9:07 pm

Oops, I meant Turbominis!

apbellamy · Post by **apbellamy** » Sat Jan 05, 2013 9:24 pm

b1zbaz · Post by **b1zbaz** » Sun Jan 06, 2013 12:52 am

So shall I buy an mg metro turbo engine then what do they put out standard mine is pushing 72bhp I think will an extra 30 Bhp make much difference

apbellamy · Post by **apbellamy** » Sun Jan 06, 2013 10:35 am

No, don't waste your money on an over priced old turbo engine that has been thrashed for the last 30 years. If your current engine is good, I would recommend some head work, then bolting on a turbo to that. some porting, and opening up the chambers to get the compression ratio down a bit.

Standard metro turbo is 94bhp. Yes the pistons are a bit tougher and the crank is nitrided, but the standard stuff isnt bad.

Rich · Post by **Rich** » Sun Jan 06, 2013 11:55 am

lankyjames wrote:100horses is attainable NA, but you will be looking at top end 1380 overbore, lumpy cams big valve ported head and will require a stronger diff to boot!

I found the best bang for buck was around the 1330 mild engine build, though a more suitable daily can would've been a more sensible idea!

If we get to meet at a show soon I can take you for a spin in mine?

Mine is a 1330, ported and running a Kent 266 megadyne and is a nice tractable engine with enough top end to keep me happy.

If I was to suggest one thing that improved it the most I'd say losing the distributor and going MegaJolt with a well set up SU HIF44.

Stuart · Post by **Stuart** » Sun Jan 06, 2013 1:24 pm

Is this the sort of speed you're after Baz?

nice video here, the Swift powered one is very respectable

b1zbaz · Post by **b1zbaz** » Sun Jan 06, 2013 3:18 pm

I don't want speed just a bit more low end grunt I'm not bothered if it only does 85 90 mph just a little more traffic light take off power will do me I use a transit as my daily drive and my longest outing will be stoneleigh which is not really that far away it just feels a little underpowered at take off there is nothing wrong with the engine it's just me

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