Search found 675 matches

by johnd
Tue May 16, 2006 11:30 am
Forum: Cars For Sale / Wanted
Topic: 94' Turbo for sale
Replies: 22
Views: 5558

Hi Murf, You can have the rear shocks for £875 and ill throw a 480 Turbo in!! I'd rather sell the whole lot together but ill let you know if I split it. Glad the MBC was OK. Yep, they certainly can bring boost on quickly can't they!! Should be about standard, or a little lower, if you back the firs...
by johnd
Mon May 15, 2006 11:19 am
Forum: Cars For Sale / Wanted
Topic: 94' Turbo for sale
Replies: 22
Views: 5558

94' Turbo for sale

'94 480 Turbo in Midnight Black. Bad points - been off road for about 9 months since failing MOT but only on handbrake effort. New discs all around and mintex pads have been fitted so this should now be fine. Car did have a spoiler on the roof so the last 6" of the roof has been resprayed. Good poin...
by johnd
Mon Apr 24, 2006 12:18 pm
Forum: General Discussions
Topic: 94' Turbo disc types???
Replies: 3
Views: 1572

Cheers brasco,

Thought that would be the case.

John
by johnd
Mon Apr 24, 2006 11:14 am
Forum: General Discussions
Topic: 94' Turbo disc types???
Replies: 3
Views: 1572

94' Turbo disc types???

Hi All,

I have noticed you can buy discs that include the hub and ones that don't for the 480 Turbo. Before I dismantle them/order new ones can anybody confirm the type on the 94 Turbo with ABS???

Cheers

John
by johnd
Tue Jan 10, 2006 10:00 am
Forum: Parts, Accessories & Brochures
Topic: 91 h plate 480 turbo s/r
Replies: 7
Views: 2800

Hi mate,

Do you have the water pump? How much for that and the intercooler?

Cheers

John
by johnd
Tue Jan 10, 2006 9:57 am
Forum: Tuning And Tweaking
Topic: MBC's
Replies: 27
Views: 8394

Hi overboost,

I still wouldn't bleed after the grainger type as you will have the spike issues associated. My two stage setup uses a form of restriction valve, like a bleed, but the air does not escape the system so regulates the flow better.

John
by johnd
Tue Jan 10, 2006 9:53 am
Forum: Tuning And Tweaking
Topic: boost valve?
Replies: 14
Views: 4049

Mi Murf,

When I got the celica I just transferred the MBC straight over. It's plumbed in the compressor-->wastegate line and the line to the Turbo VSV is capped off. It 'should' be the same on the Mister 2.

John
by johnd
Mon Jan 09, 2006 5:12 pm
Forum: Tuning And Tweaking
Topic: I know dump valves again..... sorry
Replies: 11
Views: 3428

It will run rich for about 0.25 - 0.5s and it will be fine. Some poeple say they lose you power long term. They shouldn't as the ECU is constantly adapting to the environmental conditions so I'd like to see some figure on that. A dump valve should never leak! If it does you have the wrong one. You a...
by johnd
Mon Jan 09, 2006 5:08 pm
Forum: Tuning And Tweaking
Topic: MBC's
Replies: 27
Views: 8394

BTW guys there are MBC's that work like bleed valves in that they can cause wastegate creep. Only a ball-spring type allows no signal until a preset psi. The 'bleed-type' (not bleed valve) are better for higher boost pressures and ball-spring for lower pressures <20psi.

John
by johnd
Mon Jan 09, 2006 4:53 pm
Forum: Tuning And Tweaking
Topic: boost valve?
Replies: 14
Views: 4049

Hi, Don't use a bleed valve!!! They are very crude at controlling the signal and can lead to some awful boost spikes. Most of them cost the same as an MBC. I still sell MBC's and do various types...... Basic ball spring...available in aluminium, yellow or real carbon fibre. £16.50 std £21.50 carbo...
by johnd
Thu Jan 05, 2006 12:35 pm
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

We're both right....that's what I meant! The air is denser as it is cooler and hence the ECU advances timing as much as it can. The moisture in the air helps to cool the intake charge and therefore counter detonation. I didn't want to sound like a chemistry teacher. Wrong, there is a lot more involv...
by johnd
Thu Jan 05, 2006 10:16 am
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

Hmm I have to disagree a bit.... I know someone who runs a 450bhp celica at santa pod and they use their anti-lag....basically it's great wherever you need to accelerate quickly but yes things will start fracturing and melting unless they are upgraded. Ever noticed how your car always seems more pow...
by johnd
Wed Jan 04, 2006 9:44 am
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

WRT the ecu I meant swap it out for a MOTEC or the suchlike where anti-lag is programmable. I meant that you mentioned you have a stronger turbo which should be strong enough to handle some mild anti-lag. Anti-lag, as per boost, is programmable (ignition retard/fuelling) so you can set it to hold, s...
by johnd
Wed Jan 04, 2006 9:04 am
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

Turning into bit of a debate this!! :) Nah, I was just trying to point out that you should tell the pros/cons of the idea because in essence there are no pluses to the idea apart from the sound as far as I can see and you could moderately recreate this using, say, three DV's with differing spring te...
by johnd
Tue Jan 03, 2006 8:54 am
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

Hmmmm......I don't think it will be particularily fine......it will be better! It's not so much the bearing but the impeller blades that will shatter. Lag may only be marginal but will be increased no matter what. Just saying that decreased longevity and increased lag don't really light my candle. N...
by johnd
Tue Jan 03, 2006 8:50 am
Forum: Tuning And Tweaking
Topic: power boost valve
Replies: 8
Views: 3224

Fair point....I must admit I did the fuelling changes with an S-AFC hence using the FPR to set the baseline.

John
by johnd
Fri Dec 30, 2005 12:28 pm
Forum: Tuning And Tweaking
Topic: power boost valve
Replies: 8
Views: 3224

You only really need an FPR if you are going to be running bigger injectors so you can adjust your baseline so that it doesn't run pig rich.

John
by johnd
Fri Dec 30, 2005 12:26 pm
Forum: Tuning And Tweaking
Topic: Dump Valve vs Blow off valve
Replies: 27
Views: 8623

Whoh! Whoh! Haz......not good advice. Compressor surge is BAD and creates lag. You will wear out your turbo a lot quicker this way. Yep that WRC sound is great......£500 for a new turbo isn't!!

John
by johnd
Wed Dec 14, 2005 1:15 pm
Forum: Tuning And Tweaking
Topic: Turbo air filter
Replies: 14
Views: 3674

Really simple solution here guys.....search for 'carbon induction' on eBay. There's some cheap ones with a carbon body and a chrome horn. Attach ducting to the chrome horn and you have a viper for about £40....job done! .....well, on the cheap at least. A cone will always be better than the std air...
by johnd
Tue Nov 01, 2005 4:24 pm
Forum: Tuning And Tweaking
Topic: De-cat
Replies: 22
Views: 5239

2p's worth.....

De-cat a N/A.....seemed to work OK on my old NA 480 and improved low down torque.

De-cat a turbo.....yes, yes and yes. A turbo exhaust should be as free flowing as possible.

Don't forget about the post-92 MOT regs though.

John