Could A 4k Spool Hitachi Ht15-b

[junhung]

hi.. newbie here...

i'm from Malaysia driving a stock engined KE70

this is the link to view my KE70 http://www.cardomain.com/ride/3015791

 

i was wondering could a 4K spool up Hitachi HT15-b turbo and start boosting around 2.5k rpm..?

afraid of turbo lag.. i couldn't find much info about this turbo, it was use on nissan patrol and some mazda engine...

this is the link to the turbo's photo > http://www.miricommunity.net/viewtopic.php?f=61&t=13484

 

i'll be appreciate of your opinion... :dance:

[kiahn]

not too brilliant with turbo's but that turbo might be a bit too big

especially not spooling at 2500 rpm id guess that would spool at about 4-5 grand

 

please correct me if I'm wrong

[Taz_Rx]

please correct me if I'm wrong

 

You're wrong :yes:

 

Boost is not RPM dependant. Its load dependant.

Yeah maybe in won't make boost until about 4-5000rpm...... in first or second gear, But what about in 4th or 5th gear!? :dance:

 

Just did a quick google.....

 

http://www.melett.com/turbo-parts-catalogu...achi.pdf#page=6

 

They from a 3.3l Turbo Deisel Patrol.

 

Here's the thing with deisel turbos onto petrol engines, yes it would normally be too big, but remember that a deisel does half the RPM of a pertol engine. Hence you can get enough exhaust flow through them to spool up on a much smaller capacity petrol engine.

 

I say give it a crack, brand new and looks pretty cheap.

 

I know a guy here in Tassie who has a different type of deisel partol turbo (was VNT) on a datsun A12 (1200cc) motor and that spool pretty damn quick. This was in its very primative stages......

 

[kiahn]

that makes more sense, i never thought bout the load an engine is under

[Evan G]

You're wrong :P

 

Boost is not RPM dependant. Its load dependant.

Yeah maybe in won't make boost until about 4-5000rpm...... in first or second gear, But what about in 4th or 5th gear!? :yes:

 

Just did a quick google.....

 

http://www.melett.com/turbo-parts-catalogu...achi.pdf#page=6

 

They from a 3.3l Turbo Deisel Patrol.

 

Here's the thing with deisel turbos onto petrol engines, yes it would normally be too big, but remember that a deisel does half the RPM of a pertol engine. Hence you can get enough exhaust flow through them to spool up on a much smaller capacity petrol engine.

 

I say give it a crack, brand new and looks pretty cheap.

 

I know a guy here in Tassie who has a different type of deisel partol turbo (was VNT) on a datsun A12 (1200cc) motor and that spool pretty damn quick. This was in its very primative stages......

 

 

aye taz_rx, i got a few VNT diesel turbos lying around home from my old job ( :y: ) there from a 3L diesel that makes peak power at 2000rpm soooooooo 4kc 1.3L, with a VNT diesel turbo with peak power of double the rpm from the diesel engine

 

and hey presto? :dance:

 

 

ive read somewhere some wanker put a vnt turbo on a commowhore, upto 2000-3000 rpm the turbo will spool, but when the wastegate fins started to close he got 80psi of exhaust backpressure beyond 3000rpm hmmmmmm

[Taz_Rx]

VNT turbos don't have a boosted wastegate the have a vacuum solenoid. Works completely different and if you hook it up as a wastegate you won't get boost.

Replace the solenoid with a normal wastegate however and you're good to go.

 

I can explain how they work a bit better if you're intersted?

[Evan G]

VNT turbos don't have a boosted wastegate the have a vacuum solenoid. Works completely different and if you hook it up as a wastegate you won't get boost.

Replace the solenoid with a normal wastegate however and you're good to go.

 

I can explain how they work a bit better if you're intersted?

 

yea i know they work, the only way ullh be able to use a proper wastegate is to use a different housing? or run a external gate and the veriable veins?

 

 

evan

[junhung]

You're wrong :yes:

 

Boost is not RPM dependant. Its load dependant.

Yeah maybe in won't make boost until about 4-5000rpm...... in first or second gear, But what about in 4th or 5th gear!? :dance:

 

Just did a quick google.....

 

http://www.melett.com/turbo-parts-catalogu...achi.pdf#page=6

 

They from a 3.3l Turbo Deisel Patrol.

 

Here's the thing with deisel turbos onto petrol engines, yes it would normally be too big, but remember that a deisel does half the RPM of a pertol engine. Hence you can get enough exhaust flow through them to spool up on a much smaller capacity petrol engine.

 

I say give it a crack, brand new and looks pretty cheap.

 

I know a guy here in Tassie who has a different type of deisel partol turbo (was VNT) on a datsun A12 (1200cc) motor and that spool pretty damn quick. This was in its very primative stages......

 

 

so... theoritically the turbo would generate boost at low rpm during 3rd gear onwards..?

Edited July 14, 2009 by junhung

[Taz_Rx]

yea i know they work, the only way ullh be able to use a proper wastegate is to use a different housing? or run a external gate and the veriable veins?

evan

 

No you can use the turbo how it is, you just have to remove the vacuum solenoid and replace it with a normal boosted wastegate.

In normal operation the VNT turbo lever is in the 'make boost' position when vacuum pulls the level towards the solenoid. As it make boost the vacuum (which comes from an electronic vacuum pump BTW as deisels don't really make vacuum) eases off and the level moves away from the solenoid to divert gases.

Whe you swap it out for a wastegate - The gate will hold the level back at 'make boost' and then when pressure builds up it will move outwards, again diverting gases to control boost.

 

so... theoritically the turbo would generate boost at low rpm during 3rd gear onwards..?

 

Pretty much.

Load on the engine is generated in many different ways, Not just through gearing and RPM. For example going up a hill will load your engine much more and help the turbo generate boost, even in 1st or 2nd.

You really just need to do it and find out how it will perform. :dance:

[junhung]

i decided to use TD04 from Mitsubishi Pajero...

is it possible if i use stock 4K-C intake manifold, drill it and weld in custom made fuel injectors seat??

so that i can install injector on top of the manifold.. bout the throttle body, i will find find one and modified to the manifold...

[Taz_Rx]

Yeah its been done before, with K manifolds as well as many others. :)

[SLO-030]

Brodie with an orange ke30 2dr used a weber adaptor plate and falcon Single Point Injection to get EFI on a 3k. I know your from malaysia but you may have something similar over there?