n/a cosworth

[mossy]

I know it uses a standard pinto bottom end, Is the head the same as the turbo or is it slightly different?

[abarth78]

what do you mean ...????

the head is different..

[mossy]

just wondering if you can take a turbo head and use it on an n/a engine or whether theres a specific n/a head to use..

[Mick The Cabbie]

I think you can use any of the heads. The standard turbo cams are useless though with n/a applications. A little porting work is a good idea too. You will also need to have your pistons pocketed to clear the valves.

I think i theres a n/a head on ebay this week...

[abarth78]

for na use you have to skimm the head to a bit of more comp or use dome pistons...

for the cams there lift is about 8 mm which not ideal for a fire breather

[dragaddict]

to use a cos head for an aspirated aplication the head must be revised, compression,porting & cams.

[w p e]

to use a cos head for an aspirated aplication the head must be revised, compression,porting & cams.

as above lots of head work atmo pistons different cams and lifters. you need to get the compression up to 10.5.1 or more mine at 13.5.1 and needs 24 volts to start it

[4parajon]

I know it uses a standard pinto bottom endquote]

 

Dont think thats correct either mate

[dragaddict]

when you have a hi compression engine all you need is a multi retard for the ignition for a better start mate

[jimmyesh]

to use a cos head for an aspirated aplication the head must be revised, compression,porting & cams.

as above lots of head work atmo pistons different cams and lifters. you need to get the compression up to 10.5.1 or more mine at 13.5.1 and needs 24 volts to start it

 

Why do modern diesel cars only need a normal 12 volt battery to turn them over when they have compression ratios of around 19:1?

 

I'm sure you could get a 12-volt hi-torque starter for yours couldn't you?

[dragaddict]

because when the engine is on compression stroke its the injecter that ignites the power stroke when it injectes the diesel, on a petrol hi compressoin engine, the starter takes curent from the batery & the plug remains whit less curent mate

[w p e]

because when the engine is on compression stroke its the injecter that ignites the power stroke when it injectes the diesel, on a petrol hi compressoin engine, the starter takes curent from the batery & the plug remains whit less curent mate

as above and £175 for a starter that packs up on a regular basis no thanks two battries in the boot 15 year old plus capri starter no probs. two batts over the rear wheels helps with what traction i do get

[mk1estate]

The N/A cosworth doesnt use the standard pinto bottom end. It can do but normally people stick with the cossie steel crank and rods. Mine is a pinto bottom end though and is obviously a little bit cheaper to go down this route.

[mk1estate]

^^^ OOps just replied on my dads computer! It's sambo by the way!

[dragaddict]

the cos revs more with a pinto crank yhats what i have in my cosworth