1HZ Turbo thread

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Dougal said:
The T04e is too big. The H1C is ancient in turbo terms. The HX30 will be okay.

The map on the squirrel calculator for the HX30 isn't right. The HX30 can do PR of 4 and flow of about 35 lb/min. Squirrels map only shows 26 lb/min.
Click to expand...

You guys are so much help. Thanks for the vote for the Garrett guys. Being a Canuk, I will likely go that route but not for now... unless someone wants to sell&ship me one to Africa for less than $500:D
Doug you think the HX30 is "ok" (I'm leaning that way) What are your thoughts on the HX35 and a guy on the 2H thread said he has been using a CT26 successfully?:hhmm:
I appreciate the help for all of ya.
 
The HX35 was designed to go on a 5.9 liter motor. It is way too big for a ~4 liter motor to spin up at anything less than 2000 RPMs. Same goes for the HY35.
 
The hy35 has the same compressor and turbine as the hx35, but the exhaust housing is a 9cm(hy) vs a 12cm (hx). I think the hy would work on a 4L motor, but not much if anything before 2000rpm. Its really tuff trying to compare cummins spool up rpm vs other motors because those guys run their pumps wide open and seem quite comfortable with smoking out a whole intersection like its a normal thing.
 
gerg said:
Its really tuff trying to compare cummins spool up rpm vs other motors because those guys run their pumps wide open and seem quite comfortable with smoking out a whole intersection like its a normal thing.
Click to expand...

Not all of us are running our pumps wide-open. The more active people on the 4BTSwaps forum, who aren't trying to push the 4BT to its limit, are looking for good power with minimal smoke. The only time my motor produces visible smoke is if I've got the throttle floored coming out from a dead stop.

I wouldn't recommend the HY35 for a 4L motor simply because of the smoke and lack of low-end response.

What about a HX25w? I bet you'd see great results from that turbo on a 1HZ.
 
psweber said:
You guys are so much help. Thanks for the vote for the Garrett guys. Being a Canuk, I will likely go that route but not for now... unless someone wants to sell&ship me one to Africa for less than $500:D
Doug you think the HX30 is "ok" (I'm leaning that way) What are your thoughts on the HX35 and a guy on the 2H thread said he has been using a CT26 successfully?:hhmm:
I appreciate the help for all of ya.
Click to expand...

If on budget, can't use a Gturbo etc, hunt around and try find a GT2560 with 44.5mm inducer 0.46 A/R housing, run it at 14psi, 20:1

Now no one can say I didnt help :-)

Just don't go for a big lazy thing meant to go on a heavily boosted engine thats 50% bigger.

Enjoy

Cheers, G
 
what about making an hx30/ct26 hybrid?

If the 4bt runs a hx30 why couldn't that be mated to a supra comp wheel?
 
I think based on what Dougal said the hx30 would flow enough in stock form. That is if you find one with the right compressor. To fit the supra wheel it would have to have the same shaft diameter and machine the compressor housing, so its not certain if it would fit together.
 
The HX35 and HY35 are no good for 4 litre engines. They aren't out of surge until about 2,500rpm.

HX30 is good. HX27, HX25 and HE221 are variants of MHI TD04 turbos. I haven't mapped these out for the toyota 6's, but I have for Isuzu and cummins 4 litres which have longer stroke and rev less.
 
Dougal said:
The HX35 and HY35 are no good for 4 litre engines. They aren't out of surge until about 2,500rpm.

HX30 is good. HX27, HX25 and HE221 are variants of MHI TD04 turbos. I haven't mapped these out for the toyota 6's, but I have for Isuzu and cummins 4 litres which have longer stroke and rev less.
Click to expand...
Thanks all, for your input. I have narrowed my search to the following chargers HX30 or GT2560. Once I find one for a good price and get it here to me will be some time. Will let you kind folks know what I finally get. Thanks again... wish me a genuine Garrett :cheers:
 
If you get a HX30w, make sure to get one with a 6cm turbine housing. They came with 6, 9 and 12cm turbine housings and for best spool down low, you'll want a 6cm housing.
 
Better fuel econom

lshobie said:
....

"My fuel economy leapt by 15% when I upped the gearing from 2500 to 2000rpm at 100km/h cruise.
"
Click to expand...
What did you do to change your cruise RPM? Ring and pinion, final drive or tranny swap?
I am looking to accomplish the same thing.
thanks
 
GLTHFJ60 said:
If you get a HX30w, make sure to get one with a 6cm turbine housing. They came with 6, 9 and 12cm turbine housings and for best spool down low, you'll want a 6cm housing.
Click to expand...
Thanks for the heads up, I will check it out first before sending my $:doh:
 
gbentink said:
Installing a turbo is a lot of effort for it not to work optimally. Additionally, the 1HZ is a sensitive engine and really needs an efficient turbo that boosts well in low rpm without excessively low air/fuel ratios.

...

A Gturbo Grunter Stage 1 (latest spec) after tune 17:1 AFR at 1400 rising to 20:1 at 2000rpm and up, will make ~ 15-20psi boost pressure at 1400rpm and hold almost flat to 4000rpm. This is the kind of performance you should aim for.
Click to expand...

Gbentink, can you give me a link to the Grunter Stage 1? Also what do you think is the max boost for a 1HZ without other mods for longterm survival? Also what do you think of the turbos in the following links for my application:
http://www.ebay.com/itm/oil-GT28-GT...Parts_Accessories&hash=item257cb291b6&vxp=mtr
http://www.ebay.ca/itm/TOYOTA-COAST...Parts_Accessories&hash=item1c33d2519d&vxp=mtr
http://www.ebay.com/itm/251293192480?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
http://www.ebay.com/itm/221246031943?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
thanks for the input
 
psweber said:
What did you do to change your cruise RPM? Ring and pinion, final drive or tranny swap?
I am looking to accomplish the same thing.
thanks
Click to expand...

I believe that quote was from myself many years ago. It's not a toyota and I changed transfer case ratios.

It has been badly quoted so the original link was lost.
 
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