Post 310178 by MWT5 on 2010-05-20 23:00:32
hi all
i havent posted on this site for a long while due to the sale of my T5 work and a whole load of other factors,so a big hello to everyone.
any way i am about to embark on a new project that basically envolves using a 850 T5 engine that will be shoe horned into a vauxhall corsa shell and the used for racing.
when i owned my T5 the engine was a ME7 not the one i have obtained now so what i need to know is the easiest way and the most cost effective way of incresing the power from the engine. the car will be used off road on a short oval,so torque is more important than big horsepower.
Can i get rid of the cat with little hassle as this is one of the rules.
any info or advice would be appreciated.
Post 310185 by p fandango on 2010-05-20 23:06:31
aslong as you've only got the one lamba sensor (which you should have) then yes you can decat with no problems
i'd go for a MBC (manual boost controller), gives alot more boost low down than anything else
you'll have to start a project thread & keep is updated once you start
Post 310189 by MWT5 on 2010-05-20 23:20:50
[quote=p fandango;310185]aslong as you've only got the one lamba sensor (which you should have) then yes you can decat with no problems
i'd go for a MBC (manual boost controller), gives alot more boost low down than anything else
you'll have to start a project thread & keep is updated once you start[/quote]
im unsure how many sensors there were on the exhaust as the engine is now separate from the rest of the car it was off a M reg 850 if that means anything?
once i get underway with it which will be after this seasons racing is finished (october) i will start a project thread like you have suggested and get some pic's posted aswell.
Post 310194 by p fandango on 2010-05-20 23:26:39
i'm almost certain it'll only have the 1 lamba sensor being an early car
Post 310204 by Volvostorm on 2010-05-20 23:53:18
Mine has only the one, its an 'M' reg, and its quite happy being de-catted
Post 310205 by MWT5 on 2010-05-21 00:16:09
[quote=Pault5estate;310204]Mine has only the one, its an 'M' reg, and its quite happy being de-catted[/quote]
do i need to keep the sensor and have it wired because it will have a custom exhaust made.
Post 310213 by p fandango on 2010-05-21 06:31:44
[quote=MWT5;310205]do i need to keep the sensor and have it wired because it will have a custom exhaust made.[/quote]
yes you will of the ECU won't be happy, its pre-cat anyway so you can basically do what you want to the rest of the exhaust
Post 310280 by MWT5 on 2010-05-21 17:28:33
cheers guys.
has anyone on here changed the internals of the engine like performance cams head reworked pistons boring the engine or is it just best to stick to the electronic tuning and turbo change.
Post 310282 by p fandango on 2010-05-21 17:32:54
[quote=MWT5;310280]cheers guys.
has anyone on here changed the internals of the engine like performance cams head reworked pistons boring the engine or is it just best to stick to the electronic tuning and turbo change.[/quote]
the con-rods are the first thing to change internally, the weak link in the chain & made by Cadbury's
non-turbo GLT cams are the usual ones everyone goes for, but Piper make some for our engines
as for boring it out Volvo did experiment in making the T-5 using the 2.5 engine but had issues with the wall thickness between the cylinders, which is why its a special 2.3 block
Post 310284 by MWT5 on 2010-05-21 17:41:37
GLT cams thats v intresting fandango thanks worth looking at do the con rods take the pain of a remap and bigger turbo or increased boost.at what sort of bhp do they tend to fail?
Post 310285 by Al115 on 2010-05-21 17:45:24
300bhp (or thereabouts) is often quoted...
You'll find a lot of this info already on here with some searching I expect - quicker than waiting for answers! :)
Post 310291 by MWT5 on 2010-05-21 17:53:32
LOL im just lazy alastair plus its a bit of a mine field of shorting wastegates ,bov and which remap to use and also who to entrust to do it,all of which didnt really apply when i had the ME7 engine in my V70.