Safe boost for VF34???
Thread Starter
Scooby Regular
iTrader: (5)
Joined: Aug 2003
Posts: 6,517
Likes: 1
From: Mitsubishi Lancer Evolution 8 RS
Safe boost for VF34???
I've just fitted a VF34 to my MY00 UK turbo, just wondering what the maximum 'safe' boost would be for it? Was running about 17psi on my Std TD04!
Any comments appreciated, Paul
Any comments appreciated, Paul
Scooby Regular
iTrader: (3)
Joined: Aug 2000
Posts: 25,565
Likes: 2
From: 1600cc's of twin scroll fun :)
I take it you have had the ecu remapped then????
Your best person(s) to speak to would be John Banks or Andy F, but you must understand that putting such a big turbo on where your smaller (much smaller) td04 was and not remapping the ecu can lead to serious running problems with your car. Any good mapper will map your car within the limitations of the turbo AND the engine, for both reliability and performance.
Tony
Your best person(s) to speak to would be John Banks or Andy F, but you must understand that putting such a big turbo on where your smaller (much smaller) td04 was and not remapping the ecu can lead to serious running problems with your car. Any good mapper will map your car within the limitations of the turbo AND the engine, for both reliability and performance.
Tony
Scooby Regular
iTrader: (3)
Joined: Aug 2000
Posts: 25,565
Likes: 2
From: 1600cc's of twin scroll fun :)
A tek3 would be a good idea, i wouldnt rag it round with the vf34 on, it has several different characteristics that the normal ecu wont be able to cope with (quicker spooling, bigger, roller bearing etc), id keep the car under 3k rpm until you have the map done. The sooner the map is done, the better though, you may find some adverse effects to the bigger turbo until then.
Tony
Tony
Scooby Regular
Joined: Nov 2000
Posts: 18,658
Likes: 1
From: 32 cylinders and many cats
If it was on my old 2.0 engine which I considered disposable, the gearbox and clutch were sorted, and I had a FMIC and was running on Optimax and a bit of NF, all mapped with a good fuel system, I would run 25 PSI in the midrange and roll it off to 18 PSI at the redline for road use in winter. I would turn it down a bit in summer or for a track day.
If I wanted the engine to last a long time I would try up to 20 PSI with appropriate mods.
If I wanted the gearbox to even have a chance of lasting I would run 18 PSI all the way.
I would run it at 8 PSI until you have it mapped.
If I wanted the engine to last a long time I would try up to 20 PSI with appropriate mods.
If I wanted the gearbox to even have a chance of lasting I would run 18 PSI all the way.
I would run it at 8 PSI until you have it mapped.
Last edited by john banks; Oct 16, 2004 at 08:29 PM.
Thread Starter
Scooby Regular
iTrader: (5)
Joined: Aug 2003
Posts: 6,517
Likes: 1
From: Mitsubishi Lancer Evolution 8 RS
Originally Posted by john banks
If I wanted the engine to last a long time I would try up to 20 PSI with appropriate mods.
If I wanted the gearbox to even have a chance of lasting I would run 18 PSI all the way.
If I wanted the gearbox to even have a chance of lasting I would run 18 PSI all the way.
looks like it'll be 20psi then!
Paul
Trending Topics
Scooby Regular
Joined: Nov 2000
Posts: 18,658
Likes: 1
From: 32 cylinders and many cats
So I assume you have £2000 set aside for a six speed gearbox 
VF34 is similar ballpark airflow to a TD05, or getting that way anyway, nice turbo. On that when I hit 22 PSI, the five speed was dead in a week.
VF34 is similar ballpark airflow to a TD05, or getting that way anyway, nice turbo. On that when I hit 22 PSI, the five speed was dead in a week.
Thread
Thread Starter
Forum
Replies
Last Post
