Which gaskets must I replace when removing top end?

[barwel1992]

when removing the head and cylinder ? i know im supposed to replace cylinder head gasket, bottom cylinder gasket but can i get away without replacing one or the other or must i replace them ?

[zadar]

Replace both.

[barwel1992]

ok cheers

[beabert]

stop trying to bodge lol, deglaze too

[barwel1992]

stop trying to bodge lol, deglaze too

:lol: and im not even from any ware near Yorkshire

any by deglaze you mean >?

[beabert]

:lol: and im not even from any ware near Yorkshire

any by deglaze you mean >?

Honing the cylinder walls for the new rings, I did mine myself with a drill adaptor. Im not sure what youre doing though, if you having them rebored they will do it for you.

[barwel1992]

ahh im fitting busa pistons so need the cylinder - piston clearance doing as the busa pistons are slightly larger the hone is about (lol) 0.014" :)


Edit to many decimals on the hone size

[beabert]

You have too much spare cash lol. Save it for petrol :-p

[barwel1992]

You have too much spare cash lol. Save it for petrol :-p

well the pistons are a crimbo pressie from the parents, thats all 4 inc pins so will sell 2 of them to get some cash back then getting piston rings from the states 2x sets for £45 inc P&P ;)

[hongman]

What kind of bhp increase do you hope to get with busa pistons?

[barwel1992]

What kind of bhp increase do you hope to get with busa pistons?

no idea, they are lighter than the stock ones, they are the same size so dont over bore it, in theory engine should rev easier so mainly aiding acceleration

will find out when i get it on a dyno

[hongman]

Would be interested to know the results...

[barwel1992]

Would be interested to know the results...

well what im planning to do is get it dyno'd then get it tuned at a later date just to see how much more bhp i get from a tune (even if its 1bhp through the range, it still an improvement not that it runs ruff untuned )

[beabert]

Tad lower torque id imagine because they are lighter?

[barwel1992]

Tad lower torque id imagine because they are lighter?

yup but the lower weight means the engine dosn't have to work as hard to change the direction of the pistons, so in theory the torque would be not be lower but shift it further up the rev range, i think thats what my tutor said

and wont really know what it does becasue im doing some other bits at the same time, cleaning up the ports and 3 angle the valves

[hardhat_harry]

You might as well get the full gasket set as 1 x head gasket is about £35 but the full set is £110 (or £70 if you can get them at cost)

[barwel1992]

how would i get them at cost ?

and whats included in the gasket set

[beabert]

Getting pricey isn't it.

[barwel1992]

lol getting the piston rings and gaskets all in inc P&P for £120 so not bad, all coming from zoran in America when i get round to buying it