Posted 27 July 2018 - 06:52 PM
Posted 28 July 2018 - 08:11 AM
It is easy enough to get 100 brake horsepower at the wheels of a 1275, but you only get it in a narrow portion of the rev range.
If you fit a supercharger, you will get near 100 brake horsepower, but over a much broader rev range.
For ordinary driving on the road, what you need to aim for his torque, because it is torque that gives you acceleration.
Posted 28 July 2018 - 09:34 AM
Posted 28 July 2018 - 06:31 PM
Posted 29 July 2018 - 08:26 AM
I’m doing a front mount radiator with mine, lots more thought and work, but if it wasn’t for that, bolt on and go. ( invest in good/extra engine/gearbox steadies )
Posted 29 July 2018 - 08:58 AM
Posted 29 July 2018 - 09:48 AM
Stu at V max is very good and has beeen doing these kits a long time,
first off, not all 1275 engines are created equal, get the engine number off it and try to find the spec, what you really need to know is what what pistons it has in it.
basically I wouldnt bother with the 22150 or 21252 pistons, the 21253's are ok, bit you need to check you can get the compression ratio low enough,
2nd, you will need to rebuild the engine, generally its pointless whacking a charger straight on a 30 year old engine thats done 100,000 as it'll probably smoke like train... and honestly ehile its apart you may as well rebore to 1293 and put decent pistons in.
If i was doing a charged engine for that power (I'm a turbo guy really) I'd spec it as below.
1293 with cast omega's & 10c pistons, ( even with the 10cc you might struggle to get the compression down so I would look at getting the piston dishes taken out a little maybe 3cc your looking for around 8-1 to 8.2:1 compression IMO)
rebore to 1293 and get the deck flushed to 10 thou above the pistons ( i really am not a fan of running the pistons down the bore or using decompression plates/gaskets.)
decent head on 35/31 valves and chambers taken out to 28cc.
crank and rods can all be standard asuming theres no wear, just renew all the bearings.
cam can be standard, but while its apart it may be well woth sticking somthing a little hotter in ( not too hot!) somthing like a Kent 500 ( mg metro cam), kent 266, or similar.
a turbo clutch cover should be fine at that power level, and i would definalty fit an X pin diff
Posted 29 July 2018 - 10:39 AM
Also mappable ignition curve with something like amethyst or megajolt. Amethyst is easier to install
Edited by HUBBA.HUBBA, 29 July 2018 - 10:44 AM.
Posted 30 July 2018 - 11:14 AM
Bottled on to an otherwise standard 998. Had a few issues getting it to fit, but that was down to my engine more than the kit. Stuart was always happy to help, and sent me out some different bits to try free of charge, and was always on the other end of the phone when I needed advice. Can’t fault it at all. All looks good quality and well made.
Still need to get it set up properly though, runs great at higher revs, but bogs down under acceleration a bit at lower revs. Think it’s a timing issue.
Posted 07 August 2018 - 09:03 PM
There is a Youtube channel called mightycarmods that have supercharged a cooper, albeit a japanese variant, they might be worth watching. You will have to look in the archives of their channel because he changes the engine in it later to a civic one,
That's their channel hope this helps
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