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like i said, u wont go far wrong by just enlarging the ports by a couple of mm

tungsten carbide burrs are about £20, and a flexi-drive for ur power drill is about the same. if u have access 2 a flow-bench, make a mould of the 2 ports, and cast it in resin. then experiment with port size/shape (saves f**kin up the real head). make sure the finnish is smooth, but not as...

@ crono33. The otto cycle isnt just another name for a petrol engine, its a process whereby temperature and pressure differences gives u work done. it also applies to engines that run on diesel fuel. in theory there is no reason why N2O wouldnt work on a diesel engine. the only thing i can...

syringe m8, or if u cant find one, an old fairy liquid btl with a bit of tube on it. or failing the above, tip the car upside down ;)

remove it

so wheres the cheapest place 2 get 1 4 a valver??

wot r the profiles of the cams?

they compliment each other, but do work on their own i.e. they both increase flow through the head

the diff on a m8 of mines valver went, and it was doing exactly the same thing

are ur wheel bearings ok?

get under the car, grab either end of each sahft and give it a good shaking. rumbling/knocking (especially when turning) indicates strongly its 1 of ur CV joints

driveshaft (CV joint)

diesels run cooler than petrol engines, but still half way up is fine

input- if u r unsure-change it. can i stay now???

chow?? its ciao u tit!

the world of motorsport is indeed a fickle 1, when a tuned exhst manifold is geting sold on its merits of colour change!!

exactly! BTW it wasnt a formula, it was proof!!!

great,so uve typed out the instructions, AND proved my point! "as a result of its design, the effect of the air passing through the open valve causes it to swirl. This again creates improved fuel/air mixing and improved combustion" swirl=turbulence="improved combustion"=faster flame...

yes adding air will correct the mixture (but standard practice is to reduce fuel flow, not introduce an air leak), but the point is diesel as a fuel DOES NOT burn quicker the more turbulent it is. petrol does, that is why the thoery behind the ecotec is good. in practice however, turbulent air...

its a superb theory for a petrol engine, but in practice its a bit harder. "these people" obviously fully uderstand how they work

im not just telling u wot the book teaches, im tellin g u wot ive found from engine dynomometer tests, as well as flowbench tests. therefore both static and dynamic situations are covered

mate, im not being a uni student trying 2 prove stuff. is that wot u say to every one with an education that tries to prove something u dont believe/understand. if u dont agree with me, fair dos. but its logic aswell as personal opinion

f**k it! let # = pi (22/7) (not steak+kidney!) right, area of neck of port at valve seat= #(d^2)/4 (area of circle) curtain area = #d.l so, when l=d/4, curtain area = #d.(d/4)= #(d^2)/4 so, when lift goes beyond a quarter of of th port diameter (neck of port at valve seat), the...

not reading any books mate!! going on wot ive learnt from practical AND theoretical lectures. power is a product of torquexspeed. so if u increase speed, power is going 2 rise regardless of torque (determined by VE as discussed on renaultsport). tell me how to get pi symbol up and ill show...

ah Heinz Heisler.....used it research balance in reciprocating masses for an assignment last year

no. just thinkin logically!

it allows AGGITATED air into the plenum besides making it run lean wouldnt increase the power/torque. more likely 2 be detrimental to engine

i was being sarcastic the reason why an ecotec doesnt work on a diesel is because the theory behind it is to increase turbulence, and therefore increase the speed at which the fuel/air (flame front) burns in the cylinder, and so increase cylinder pressure. this is an excellent theory for a...

so a diesel doesnt have a throttle........???