Other than the obvious(rods etc) what would have to be done to a 1600cvh block to cope with 250+bhp?

 

rods and pistons

crank should be fine i run a std one in mine as im sure mr c, tim and ollie do

 

High pressure oil pump or anything like that? Could anyone recommend any good rod & pistons?

 

farndon, accralite, pec, wossner rods/pistons 0.5+ oversized pistons
7.5.1 or go mahle 8.0.1
hd bearings all round the crank high flow pump
efi or better this depends if your running mfi and need to convert gotech should be a good choice
ford head gasket
t3 stage 2+3
injectors to suit
stage 2 bigger valve head at least
standard size crank if you can as the more they are ground the softer the metal is, as the hardened surface is taken away on a grinding 0.25 ok
every think balanced up
you will probaly be over 250 at the fly
so an ap paddle clutch coupled with a cts stage 2+ gearbox and you will be flying
some might say you need more but a good setup by a pro and BINGO
mark2

 

Thanks for the info mark, very useful. Does compression matter much? Wot will be the benefits? Is it just the lower comp the more boost you can run????

 

hi
standar cr can handle a set amount of boost lower the comp so more boost more boost= more fuel = more bang = more bhp the standard cr will affect the the final volumetric efficiency say a na engine runs 60% efficiency tune it and make 85% now a turboed engine(forced enduction) as standard is around 100 to 145 efficiency i think so if you can lower the comp it gives you more volume to add air and fuel without exceeding its capacity and not knocking the bottom to bits as on standard cr as said, you here people say down the pub just turn the boost up it gives you more power and it does but it want last on standard cr will either shatter pistons or rip the bottom apart above 16+ psi 14psi is about the limit on standard cr
now if you run a standard head on a low comp engine the question is will the head flow enough to get the best out of it the answer is no
well i have waffled a while now and my beers are calling
if anyone sees a fault in what i have said please tell me as i seem to answer alot of the time after a beer lol
mark

 

Thanks for your help mate. Would a thicker head gasket not be better than a standard ford item cos it must surely lower the comp again? Cheers mate, enjoy your beer

 

nick thomas had 250 bhp and at one point 260.
factory rod an pistons.
just look in a old performance ford mag.

 

I was running an engine dyno proven 245bhp on stock bottom end with arp rod bolts the only 'aftermarket' components, standard c/r/standard rods. Lasted 2 years in that guise running 1.5bar boost and took a lot of abuse! Just finished building a steel bottom end now though so i can chuck a bit more power through it and rev it harder with peace of mind.

 

cheers
yeah the thicker the gap you make does lower the comp but when you see the failier rate compared to ford/payen gasket and proper pistons it speaks volumes

i think your thinking along the lines of a decomp plate which lowers the comp but you get the extra failing points ie
from block up, block sealer compound, decomp plate then head gasket and then head by doing it like that you increase the failing point x2 either goes at block to decomp plate or decomp plate to head gasket
doit right and the grin will last longer on your face when you put your foot down
mark2

 

standard internals running nearly double the power they where built for aint lasting long in my books doit right and get a engine which will last not be in bits or need alot of attention
why run big power and have to creep about incase the bottom lets go under strain (boys)
mark

 

I have a stage 2 big valve head which im goin to put a newman cam in and im using a payen head gasket which has been quality. Just wanna build the spare block ive got to be very strong and still keep it a 1600 cvh and put a better turbo on. I want to do it proper and once hopefully.

 

So JamSport is shit then.

Think he no's a thing or to about a 1.6 cvh.

 

I didn't 'creep' around pmsl.....it's not ideal i know but everyone was amazed at how my engine lasted with the abuse it had (trackdays/qtr mile/brunters etc).

 

Good on you.

A turbo is for abuse.
Not for doing the shoping run

 

mark, i mentioned this in another post that a standard bottom end was reliable below 18psi but then i was told that this was waffle as psi has nothing to do with it, due to having a modified head, cam, turbo would make that different and that the standard bottom end was good for 240bhp ish.

 

std mahle pistons can cope with 350hp,rods id say 250-60hp at a push

 

IMO This is about the most accurate post so far!

 

it was you that orginally said that!

 

dont you mean standard 'machined' for low CR mahle pistons can cope with 350bhp?

 

hi
i do not dispute the fact that a standard bottom can handle the power you have stated but as you have said its at its limit, to go above the 250+ bhp and be reliable you have to change parts
yes a standard bottom end with a modded cam,turbo,head will reach the power but it does this because the modded parts allow more air fuel to flow in (volumetric efficiency ) but that reaches a point where a lower comp setup will allow even more in
mark

 

thanks guys
just had a read and not pissed this morning glad no one cu-ted me off with silly names
i see my interpritation has its faults
mark

 

LMAO! That makes sense then!

 

least someones talkin sense in this thread

 

yes mate machined for lower comp,but i reckon they will do 240-50 standard comp,as jamsport and a few others have proved