diesel tuning

[blaqkaudio009]

hey, ive seen alot of threads on tuning a petrol cavalier but i was wandering about getting more power out of a diesel engine, nothing too pricey or anything yet though. by the way its a 1.7td
cheers

[Gaz]

Moved it for you and is it the gm or the izuzu td?

[blaqkaudio009]

thanks for moving it, realised after i posted where i HAD posted it
too be honesti didnt know where was different ones! but ive just checked and found the litle 'gm' in the engine, so whats the difference?

[Gaz]

I dont know tbh i just know there is a difference when tuning but i know nothing about diesels, have you got a pic of your engine?

[blaqkaudio009]

not atm but ill take some in daylight tomorrow, dont get excited its standard and dirty, but looking to clean it up a bit, ive got an air filter but its a crappy universal one, when my body kits on i may get tubes to bring it down to the front to get more air?

[Gaz]

Its more a case of identifying which one you have than how clean it is.

[blaqkaudio009]

oh right, yeah ill get photos up tomorrow, i mean its got GM written on it, but that could be something else and me being an idiot. but yeah, all ive done for power is trying to restore the odd horse by sending some engine cleaning stuff in when i filled up the other week. it was fast enough when i first got it last year, but now im looking to boost a bit more.

[Squig]

a friend of mine mentioned butane acting like nitrous for diesels...

[Redorado]

a de-cat will help a little, unless things have changed on diesels last i herd they dont need a cat for mot as they just do a smoke test oh something like that

[blaqkaudio009]

mm, just been reading up on decats and most sites say that there safe on a diesel in a mot, but a petrol would fail on the spot. so how do you go about doing this? i see people selling the decat bits, but where exactly is it on the car
george

[Redorado]

if you follow your exhaust from the engine, the cat will normal be roughly on a line with front doors, and will look something like this



the decat will be just a plain bit of exhaust pipe with a flange (love that word ) on either end, so if you've the right one you should be able to unbolt the cat and replace with said decat pipe.

if you check ebay i think there are normally about 50 quid give or take, or if your ok at welding i would think you can make your own to behonest.

dont throw away your cat, as i think they can be weighed in due to the platinum content.

Also on diesel i would possible check out companies which tune/modify the injector pumps as i know some diesels there is lots of extra potential in them ( i've a mate who works in a place which does overhauls on truck/lorrie pumps and they get a performance increase - but i'll give him a shout and see if anyone can be done on smaller diesels)

[blaqkaudio009]

if you could that would be great! let me know what he says?
ok ill take a nose round ebay and see if i can find a good priced decat.
thanks!

[Redorado]

i've also heard (from my past in the rover scene) that diesels can get good returns on being chipped is well, but i'd find out what engine/type you have first whether its a GM one or the Izuzu (spelling?)

is it a Turbo diesel you have ?

[blaqkaudio009]

yes a 1.7 TD GM. im in the middle of opening a thread with, just uploading photos. yeah my mate was on about chipping his astra (boo) ive seen those little cheap chips on ebay - rubbish i take it?

[Redorado]

oops double post

[Redorado]

aye more then likely the ebay ones are sh17e, best off finding a specialist garage, who'll bring it in chip it and then rolling road it to tune it.


i'm unsure but i think the GM made diesel is the standard and the TD diesel's are the Izuzu designed ones. but i can't swear to that at this moment in time.

just got a text off my mate, the company he works for is called Feather Diesel they pretty much overhaul pumps and injectors mainly commerical stuff i think but on the webpage its meantions cars also. i should see him at the weekend so i'll have a proper natter with him

http://www.feather-diesel.co.uk/

[blaqkaudio009]

ok cheers mate
heres the photo of the engine i said i would put up,

am i being a total tit or does this mean its a gm or does that stand for something else?

[Gaz]

am i being a total tit or does this mean its a gm or does that stand for something else?

Thats the part number stamp for the plastic bit at the back of the bay

[Cavalier342]

Hi mate.
I noticed in the pic that you have a universal filter there. Just thinking of getting one fitted in my 1.8 petrol. Do you reckon it'll do anything, even a small difference? I'm not thinking about the cheap ones, i want either a K'n'N, or a Pipercross filter. Cheers dude.

[blaqkaudio009]

hey, well it didnt feel any different in mine, but im going to bring it futher to the front.
it would make a difference on a petrol. not a huge change, but my mate put one in his petrol astra and he recons you could tell.

[Cavalier342]

cool, thanks fella. i might just try it.

[Greig Sri]

Get yourself a boost control valve and a boost gauge. Get them fitted and turn up the boost ,then turn up the fuel. I did it to my Astra last week and its made a huge diffrance.

Greig

[Cavalier342]

cool, thanks fella, but it sounds a bit too expensive and complicated for me to be fair.

[dave's.veccy]

Thats an Isuzu lump so its safe to tune.

If it was the Vauxhall TD (which i dont think came in Cavaliers iirc) then the rocker cover and physical looks of the engine are simular to a Petrol 8v.

Its also the same engine as Rich C's on Vxon which has turned up fueling and boost and it also runs nitros (I have pictures of this somewhere too when it was on the rolling road at Jamsport in Northampton.)

What you need to do is remove the white collar from inside the pump and you need the above (boost gauge and control valve) to increase the boost which will up your BHP slightly. This is a known and guaranteed way to extra power. It shouldnt cost you more than around £50 to do either.

A custom exhaust is a good way to go too but this on its own wont achive many extra ponies

If its seems complicated or expensive, id walk away from tuning tbh. As the saying goes, nothing comes for free.

[blaqkaudio009]

ok yeah i might try that,
cheers