Performance specs for toyota 2H engine

Submitted: Saturday, Jun 04, 2011 at 15:08
ThreadID: 86749 Views:17316 Replies:4 FollowUps:13
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Have recently found Dyno results for my 60 series showing max. 45kW at 3300 rpm.
My understanding is that the normally aspirated 2H puts out 77kW and the turbo 12H-T 101kW
I have an after market turbo fitted and the engine was supposedly fully reconditioned about 60K ago but the Dyno results seem pretty poor.
Anyone have any ideas or experience with dyno results for a 2H?
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Reply By: Member - Christopher P (NSW) - Saturday, Jun 04, 2011 at 15:40

Saturday, Jun 04, 2011 at 15:40
yes something isn't rigth there????? do you have an intercooler on it??? if you don't then maybe thats why your getting max torque/ 45 as opposed to 101....

If you fit after market to a toyota, it is advised to fit an intercooler as the turbo heats up the air.

other than that take it to a diesel specialist and get him to sort it out???

one other thing has it got a boost compesator/ tuned correctly at the pump?
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Follow Up By: Member - Ralph K (WA) - Saturday, Jun 04, 2011 at 16:14

Saturday, Jun 04, 2011 at 16:14
Thanks Chris,
No intercooler fitted and yes, the engine gets hot when towing up hills on a hot day but otherwise is acceptable.
I guess there will be a fair bit of loss through the auto transmission so am not sure what the Hp should be at the wheels
Ralph
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Follow Up By: olcoolone - Sunday, Jun 05, 2011 at 09:40

Sunday, Jun 05, 2011 at 09:40
Our D4D Hilux that was chipped put out 86 kilowatts at the wheels with large mud tyres, the real output from the engine was around 145 kilowatts.

A rolling road type dyno can only be used to get a base line, it depends what correction factors are used.

So yes an engine that puts out 101 kilowatts at the flywheel with no auxiliaries may only do 50 to 60 kilowatts at the wheels.

If you had a Landcruiser putting out 40 kilowatts at the engine then you would no about it.

I would say the 40 kilowatts he is seeing at the wheels may relate to about 80 to 90 kilowatts ate the engine
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Reply By: garrycol - Saturday, Jun 04, 2011 at 15:44

Saturday, Jun 04, 2011 at 15:44
The Toyota published figures will be the engine - the dyno figures will be at the wheels. Power losses through the gearbox, drive shafts, diffs etc take a lot of power.

Garry
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Follow Up By: Madfisher - Saturday, Jun 04, 2011 at 16:55

Saturday, Jun 04, 2011 at 16:55
Normal losses can be as high as 50%. So that would give you 90kw which would be about right.
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Follow Up By: Batt's - Saturday, Jun 04, 2011 at 18:02

Saturday, Jun 04, 2011 at 18:02
Up to 50% maybe if your running 42" tyres I read somewhere once it's around 17 to 23% power loss at the rear with standard tyres anyway I think you need to get the motor checked out your way down on power as you know .I don't reckon inter coolers are the be all to end all I took my DTS inter cooler off my GQ and it helped the running hot issue put a snorkel on a couple of months later and it ran even cooler, gained power and up to 1ltr per 100k better on fuel
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Reply By: Bigfish - Saturday, Jun 04, 2011 at 17:05

Saturday, Jun 04, 2011 at 17:05
Probably a good idea to get an after market larger radiator fitted with the aftermarket turbo. The original radiator cant take the extra heat generated and WILL cause problems. Every car manufacturer boasts about H.P....When its measured at the back wheels it,s a whole set of new and lower figures.
60 series were not known as a power horse.
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Follow Up By: Member - Ralph K (WA) - Saturday, Jun 04, 2011 at 17:35

Saturday, Jun 04, 2011 at 17:35
Thanks for the info. Have recently fitted a new rad as the old one was showing a few leaks. New rad made no difference to overheating. The custom built rads seem to be quite expensive. Do you know of any reasonably priced after marker radiator suppliers?
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Follow Up By: Bigfish - Saturday, Jun 04, 2011 at 20:04

Saturday, Jun 04, 2011 at 20:04
I paid about$400.00 for a radiator in Darwin for my 1HZ troopy. It was called a "tropical radiator" and the difference is very noticeable. No matter what I do the needle doesnt go pass the middle on the factory temp gauge. Have amate who also put one on and he reckons its the ducks guts as well. No more water temp problems and piece of mind when driving/towing on the hot NT roads.
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Follow Up By: Bigfish - Saturday, Jun 04, 2011 at 20:06

Saturday, Jun 04, 2011 at 20:06
Also forgot to mention that a 3 inch exhaust helps extract more power. 2 & 1/2 will get by but 3 inch better.
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Follow Up By: Member - Ralph K (WA) - Saturday, Jun 04, 2011 at 20:07

Saturday, Jun 04, 2011 at 20:07
Sounds good. Willl try to search out 'tropical radiators'
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Reply By: Ruffy-Dan - Saturday, Jun 04, 2011 at 21:30

Saturday, Jun 04, 2011 at 21:30
A 4wd will lose between 30 and 50% of it's engine power through the driveline. The less it has the more it loses..
I have a super charged 2H that makes around 55kw at 8psi on 33inch tyres.
There is often a varience in readings from different dyno's.
You may need a tune if it has been a while?
An intercooler will not give you more power as such. It will allow you to tune for more power though.

DAN
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Follow Up By: Member - Ralph K (WA) - Saturday, Jun 04, 2011 at 21:57

Saturday, Jun 04, 2011 at 21:57
Hi dan,
Can I fit a supercharger and a Turbo?
Seriously, I'm reasonably happy with the output as it is, but have a minor issue with cooling when towing which I will sort out .
I cruise at 2,000rpm over combination dirt and bitumen on 33" tyres which is about 110km/ph and get 7km/lt (14.29lt/100km) fully loaded with 180lt fuel, 120lt water, plus camping equipment.
From what I have read on the forum and my recent experience with a new 2010 Hilux (5km/lt) to Bremer Bay and back, I think the old 60 series is doing ok.
Ralph
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Follow Up By: Bigfish - Sunday, Jun 05, 2011 at 08:43

Sunday, Jun 05, 2011 at 08:43
I find your cruise speeds and rpm to be possibly flawed. My 1HZ turbo runs 33 inch tyres and at 2000 rpm is doing 80klm per hr. 100kph it is doing 2500 rpm.
Both these figures in 5th gear with standard diffs. Let me know when you check as I would be interested in the figures.
cheers
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Follow Up By: Member - Ralph K (WA) - Sunday, Jun 05, 2011 at 09:58

Sunday, Jun 05, 2011 at 09:58
Hi Bigfish,
Am estimating speeds as tyres have changed ratio and I havn't recalibrated the speedo.
The error is 7.27% so if speedo says 100kph then am actually doing 107kph.
Will take the old girl for a run and see excactly what's what for you.
Ralph
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Follow Up By: Member - Ralph K (WA) - Sunday, Jun 05, 2011 at 12:24

Sunday, Jun 05, 2011 at 12:24
Bigfish..ok I lied!!!
Speedo needle is just to the left of 100kph mark when doing 2000rpm so lets say speedo is reading 98kph, add the 7km for error and you have approx. 105kph.
I have a 4 speed auto with lockup and standard diffs.
Ralph
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Follow Up By: Bigfish - Sunday, Jun 05, 2011 at 12:55

Sunday, Jun 05, 2011 at 12:55
Thanks for reply ralph. I am astounded that there is a 25kph diff between the same motors at same revs both in overdrive. Mine is a 97 model troopy
Anyone shed some light on this?
cheers
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