Boost Issues

Post by **The Renegade** » Mon Sep 11, 2006 8:04 pm

BQ.05.TD wrote:
The Renegade wrote:
BQ.05.TD wrote: NO NO NO u must use at least 95 octane. if its a leaded model u have to use high octane fuel as leaded fuel had a higher octane back in the day. and if u dont use it then u will get detonation and pinging real easy
Actually, there's no difference between the leaded & unleaded engines.
Remember, these things all came from Japan where they have unleaded or unleaded.
But, the 95RON is a good idea, and if you're running more boost, more octane is your friend.
but in jap there shittes fuel is like 97-97 octane. and there best is 101-103 octane. thats y all STIs evos etc make less power over here cause they have to de-tune them for out shit fuel.

Yeah, I know that our fuels are about as good as flat VB, but the E15ET - no difference whatsoever.

SashET · Post by **SashET** » Mon Sep 11, 2006 8:08 pm

Stop hijacking my thread hommies! lol.

-Canister vacuum hose pre throttle, where's she go?
-1st gear boost problem

These are the topics at hand. Please help.

Sash

Post by **tassuperkart** » Mon Sep 11, 2006 8:33 pm

I dunno M8 but ive got a bit of a feeling that some of that manifold divider may have made its was into the zorst housing of the turbo.
This may explain the dodgey slow boost.
this happened to my Volvo truck turbo many years ago after the manifold began to disintegrate internally.
However, the only way your going to find this out is if you seperate the housing from the turbo core and have a look at the turbine wheel tips.
Thats your call.

L8tr
E

Post by **The Renegade** » Mon Sep 11, 2006 8:43 pm

lol sorry dude.

Mate, my engine is in bitz, which doesn't help.

I've just looked at 4 dozen engine bay pix and I can't find a clear one that shows it.
Damn you all for not taking clear pix of your charcoal cannisters!!!!
However, from a few partials, I think it might connect to one of the nipples off the throttle body.
I'll let you know if I find anything.

SashET · Post by **SashET** » Mon Sep 11, 2006 8:44 pm

I've had the turbo off the car and didn't notice anything strange on the dump pipe side of things. The turbine wheel span pretty freely too and I did shake it around to see if anything would come out of it, but nothing did. Do you mean that I need to seperate the turbine side of things from the CHRA to see something? If so, is it easy to do and put back together, what would I be looking for?

Post by **tassuperkart** » Mon Sep 11, 2006 9:17 pm

Nah your unlikely to see any damage on the outlet of the turbine.
Yep, you need to seperate the zorst housing from the core to have a look where it matters.
Not hard but they can be pretty difficult to seperate and you need to be very poatient.
Itll be pretty obvious any damage in there.
Last resort tho.
L8tr
E

Post by **The Renegade** » Mon Sep 11, 2006 9:35 pm

Ok, I just went thru all my engine swap pix, and found 3 that kinda show the general area.
The top two are my old BRC engine, and the bottom one is my RRC engine
Unfortunately, you can't see in any of them where the bloody hell they go, but you get the general idea of where to look. I still think it goes somewhere on the throttle body of the RRC.
Anyhoo......

http://www.aussiecarforum.com/album_sho ... ic_id=1670

SashET · Post by **SashET** » Tue Sep 12, 2006 7:59 am

Yeah Renegade, thats the hose I'm talking about. Argggh, there isn't a decent shot showing where it connects. Anyone else got one. Evan, I think I'll leave pulling the turbo apart as a last resort as you suggested and possibly move onto getting this ecu terminal thing sorted and really start looking for vacuum/boost leaks (i.e. replacing one hose at a time). Just as a matter of interest, If someone could tell me how to post pictures, I can show you pictures of the manifolds (before & after) and the turbo. Does it have something to do with the Img* button?

Sash

[/img]

Post by **The Renegade** » Tue Sep 12, 2006 12:02 pm

You need to host the pictures somewhere first. (eg: I use my website.)
The hit the IMG button, type in the URL of where the pic is, and then hit the IMG button again.
So the string should look like this:

Code: Select all

&#91;img&#93;http&#58;//www.geocities.com/the_renegade_2000/p.gif&#91;/img&#93;

SashET · Post by **SashET** » Tue Sep 12, 2006 12:10 pm

Cheers Renegade. Do you know anywhere that will let you host pictures for free?

Post by **The Renegade** » Tue Sep 12, 2006 12:12 pm

photobucket springs to mind.
or imageshack.
There probably some aussie ones, I'm not sure.

SashET · Post by **SashET** » Tue Sep 12, 2006 12:49 pm

Thanks Renegade, I got it going. See the pictures below of the exhaust manifolds (before & after - the original one in the car and the one I die grinded back). I also took a picture of the turbo exhaust side (should look black and sooty shouldn't it?). Sorry for the picture quality, but they were taken off my phone. Anyway, I'm still chasing a decent picture of where that vacuum line off the top of the charcoal canister goes too. Anyone?

Cheers
Sash

Post by **The Renegade** » Tue Sep 12, 2006 12:58 pm

Wow. That original manifold you were using is rat shit. If you turn the exhaust wheel by hand, see if you can hear or fell any obstruction at all, even a little crunching noise or anything. I think it'd be a miracle if none of that crap has fallen into your turbo.

angel · Post by **angel** » Tue Sep 12, 2006 1:06 pm

yes you really do need to take the exhaust housing off to see if there is any damage. My old t25 never really boosted right, but it look fine with the exhasut housing on, one day i decided to rip the housing off (changed turbos) and what do you know, all of the blades on the inside where smashed, no wonder i had shit boost.

SashET · Post by **SashET** » Tue Sep 12, 2006 1:24 pm

Advice taken, I will check out the inside of the exhaust section and see what I can find. I will not do this until I get my hands on another turbo tho (just incase I f*#k it up). I'm thinking t25g or t25. I've read that the t25 spools up quicker (but not as high) and the t25g has more lag but more top end. What do you guy's think, t25g or t25? Anyway, still chasing a pic of where that line goes from the top of the charcoal canister to _______???

Cheers
Sash