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£350 just for pistons.... yougotta add up all the costs before you start... one of the most important things it intake temp. you'll never get over 300 without a seriously good intercooler or charge cooler. and then there's the space. there is not allot of room in the engine bay..
T3.... not ideall T28 is more than big enough for 260.
but its a valver engine. even with forged pistons i doubt it will take over 280... and as for the gearbox... ill give it a week..lol
T3.... not ideall T28 is more than big enough for 260.
but its a valver engine. even with forged pistons i doubt it will take over 280... and as for the gearbox... ill give it a week..lol
Std crank is well made on the 1.8, and the early rods are BEEFY.
Its not boost or bhp which breaks rods and cranks, its rpm. The highest loading on a rod/crank journal isnt on the combustion stroke but on the exhaust stroke around TDC depending on rod/stroke ratio.
If you controlled the burn properly (this includes piston crown, chamber and quench modifications) and very very accurate mapping based more on EGT and ignition timing than AFR as thats easy to hit. I'd say you could hit 300-350 on std rods, and higher with std crank/steel rods. Ultimately who says you have to stop pushing until you hit 600-750bhp. When playing with high output FI, the problem becomes controlling the burn, and thats it, everything else is easy to get round in comparison.
Its not boost or bhp which breaks rods and cranks, its rpm. The highest loading on a rod/crank journal isnt on the combustion stroke but on the exhaust stroke around TDC depending on rod/stroke ratio.
If you controlled the burn properly (this includes piston crown, chamber and quench modifications) and very very accurate mapping based more on EGT and ignition timing than AFR as thats easy to hit. I'd say you could hit 300-350 on std rods, and higher with std crank/steel rods. Ultimately who says you have to stop pushing until you hit 600-750bhp. When playing with high output FI, the problem becomes controlling the burn, and thats it, everything else is easy to get round in comparison.
djsly said:
Even 300 doesn't seam much!!!! You ever been in a car with more than 200. Cragis is running bout 220-230 and that pretty rappid!!!! i could strap a IHI on mine and Have 350 bhp.... Doubt it will ever get traction though...lol
260 is more that enogh round a track with a good torque curve.
What is it tuner say...
BHP sells engines but Tourque wins races.......
in a front wheel drive car, i wouldnt want/dont see the point, in having more than 250bhp max, with a nice wedge of torque. theres no point. you will be forever breaking traction. and whilst turbocharged engines are fun, this problem is worsened by the very nature of turbo's, with the sudden torque increases they give. this is the main reason i have tuned my Mk1 in the way i have....nice tractive, usable power/torque.
bbt's 5 just made 350bhp with stock engine, forged pistons, adj fuel reg and 20p.s.i of boost.
these engines are made for bhp renaults own f7 turbo made over 500bhp
its got every thing you need 4 valves per cylinder with the spark plug in the middle, a cross flow design and oil sprays under the piston, also the f7r piston is dished and the cam lobe design is almost the same as cosworth cams.
a williams engine with 9 p.s.i will make about 220bhp
these engines are made for bhp renaults own f7 turbo made over 500bhp
its got every thing you need 4 valves per cylinder with the spark plug in the middle, a cross flow design and oil sprays under the piston, also the f7r piston is dished and the cam lobe design is almost the same as cosworth cams.
a williams engine with 9 p.s.i will make about 220bhp
