Thread: Variable Boost Turbo on Td5s

There's no need for a blow-off valve on most diesels although later D2s with the inline throttle valve operational would do well to have one.

Originally Posted by rangieman

And that lag just off idle your talking about is no where near as bad as a Tdi
When i first got my Td5 i thought there was no lag at all after hopping out of a Tdi Now the Tdi,s are woefull for lag

I just bought a '96 130 CC 300tdi with a Garrett GT2556V (variable vane) turbo fitted, along with up graded 'Alisport' intercooler and radiator. I've only had it on the road for a few weeks, but I can tell you, it absolutely craps on my Td5 Xtreme when it comes to lag and straight out performance. Pretty impressed so far.

Cheers, Murray

Originally Posted by rijidij

I just bought a '96 130 CC 300tdi with a Garrett GT2556V (variable vane) turbo fitted, along with up graded 'Alisport' intercooler and radiator. I've only had it on the road for a few weeks, but I can tell you, it absolutely craps on my Td5 Xtreme when it comes to lag and straight out performance. Pretty impressed so far.

Cheers, Murray

That means alot coming from a Isuzu driver Pat

Originally Posted by Zute

Would they use a blow off valve ?

Originally Posted by Graeme

There's no need for a blow-off valve on most diesels although later D2s with the inline throttle valve operational would do well to have one.

my local dyno shop tried to tell me that i would need a blow off valve if i wanted to get my tdi up to 15psi boost....he then went onto say that toyotas don't like to be pushed past 10psi

Originally Posted by PAT303

That means alot coming from a Isuzu driver Pat

An Isuzu 4BD1T with a GT2556V VNT on it............now that would be impressive..........I'd be lying if I said I hadn't thought about swapping turbos between the County and the 130.

Murray

Originally Posted by weeds

my local dyno shop tried to tell me that i would need a blow off valve if i wanted to get my tdi up to 15psi boost....he then went onto say that toyotas don't like to be pushed past 10psi

The VNT on the 300 Tdi gives 22psi almost instantly if you floor it. It will hold 20psi at higher revs and will hold 18psi at any speed. It doesn't use a waste gate or blow off valve.
It's a pitty VNT's are so expensive, I would definately be fitting them to my other diesels.

Murray

Originally Posted by rijidij

An Isuzu 4BD1T with a GT2556V VNT on it............now that would be impressive..........I'd be lying if I said I hadn't thought about swapping turbos between the County and the 130.

Murray

Funnily enough, I've been planning that for about two years now. Have the GT2256V, have the 4BD1T, have too many theives of time.

So how much does all the kit cost?. Pat