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i wouldnt bother changing, i've never seen any gains worth the extensive cost of changing.

i wouldnt bother, http://www.youtube.com/watch?v=2Vpe98B-IAM

i've not heard anything since....his phone is off.

Not to worry steve, you have one along with the billet pedal mount.

well i just got home.............a straight 32 hr day with 4 hrs sleep before that. Was all good fun though!

Positive thinking leads to positive action. ECU's are fine, it was the wrong firmware on them so it wouldnt communicate with my software version, nothing wrong with the car, loom, ecu.

Dont have to worry about that, radial clearance is sufficient even with a generous corner radius on the cutter and the sharp edges left on the side of the piston were removed.

it was making 240 with tweeked valves, so it should still be in a similar region, plus cams that aren't 'that' wild give higher cranking pressures than ones with wilder profiles.

Your Heads done now, done 2 this morning. Your new valves had a lip on the back so i had to backcut by 35 deg to remove it, then reface the seat (even new valves arent that nicely done) and dropped 0.2mm. The valve tip was then shortened by 20 thou to keep the tip height the same with the...

The legend that is steve has saved the day! I could only get the rings for a possible tues.

was a good spot on your half though, you done us proud noticing that! Elbows might be useless, but eyes are spot on...... I'll say i didnt spot it first because you were holding the piston first.

You have to look at it in another light, if the valves didnt bend and we didn't take the pistons out, that radially bent ring would of caused some serious problems come mapping. Retrospectively, its probably good luck.

I've got DP's own cars new head and manifold fresh off the development program, clever blokes with their engine combos.

Yea, its looking pretty good at the moment, needs the finishing touches though.

Is this being dropped then?

Aswell as your previously mentioned adiabatic efficiency at that specific pressure ratio, PSI might remain the same but density will be different.

They are not.

? unburnt air doesnt burn by itself though. Lean mixtures burn slower, so on overrun the mixture is still burning as the ex valve opens. However this is rare on modern cars which just buzz with overrun as they run a total fuel cut off on overrun.

Its also terribly disgusting and shite at everything.

once we were over 80mph i couldnt keep up with the box screaming its balls off in 5th......down the back straight i had to sit at 6000rpm so i didnt damage anything.....didnt seem to work though. lol

Great vid mark, had loads of fun messing around with you. But we kept getting 'seperate' boards up as we were too close so i had to back off as i was scared of being blacked flagged or something.

Why blast all the dirt through your engine? And I doubt its carbon, the layer or carbon in your chambers is a few thou thick and actually aids correct combustion.....its not inches thick with carbon that it'll affect anything. Excess carbon cannot build up, it just get burt or blown off in...

carbon :S

sadly yea.

was in quite a diff guise when in my workshop, looks loads better now!

I dont know, i might be able to help if i could read the overlays and know which run was which.

Wow thats a bad graph setup! I cant see any info, or rather i cant be bothered to stare at it for too long.

cant you buy one off the people who made your gauge? As the resistance curves will be matched. NPT is pretty standard in the automotive world for aftermarket sensor threads etc.

Dismantling.......= rip apart. Assembling = a guide i cannot be arsed to write! lol

lol, course not.