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Post by geeves on Nov 7, 2008 19:57:07 GMT 11
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Post by Benzev on Mar 23, 2009 21:45:07 GMT 11
A 4BD1 came in the old Isuzu NPRs of the eighties and the Forwards came out with the 6 cylinder version of the same engine nl. the 6BD1 They were straight out light truck engines nothing that ever appeared in lighter vehicles. The 4JD1 I've never heard of!
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Post by Yarno on Mar 24, 2009 7:58:44 GMT 11
The 4BD1 is in the old Land rovers and from what land rover drivers say it was the best engine that they ever had... They were a 3.9L non turbo, but are happy with one strapped on.
The 4JD1 looks like it was in one of the Gemini's no idea on specs.
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Post by geeves on Mar 24, 2009 10:15:10 GMT 11
strange thread. The original question has gone???
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MattMU
Isuzu Senior
Rodeo Now!
Posts: 206
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Post by MattMU on Mar 30, 2009 17:52:57 GMT 11
Haha this is funny thread I though you were asking and answering your own question Geeves. Yarn is correct about the 4BD1 I worked on them for years in LandRovers. They did do a 4BD1T which had the under piston cooling nozzles and different pistons and crank. Went ok considering they werent intercooled and there was no wastegate on the turbo (very under blown). They responded well with intercooler, decent exhaust and a proper waste gated turbo with sufficient boost.  Matt. |
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Post by bminder on Apr 5, 2009 13:57:37 GMT 11
This is my strange thread.
I was trying to ask about the 4jb1t motor, but got the designation wrong.
I have the Isuzu 3.2 SOHC motor in my '95 Rodeo (US spec) and was wondering about putting the 4jb1t in it like the MU has in Australia.
What is the max rpms for this motor?
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Post by Yarno on Apr 5, 2009 14:14:32 GMT 11
They are governed at 4250rpm
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Post by dasnoboarder on Apr 5, 2009 14:20:27 GMT 11
They are governed at 4250rpm I've always wondered what the motor would do at this speed, going through a mud hole or the likes. Assuming the motor is in good condition, would it be damaging? Is it comparible to 'valve bouncing' a petrol motor. |
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Post by Yarno on Apr 5, 2009 16:08:15 GMT 11
No the governor stops the revs by limiting fuel similar to a rev limiter with a smooth cut.
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Post by dasnoboarder on Apr 5, 2009 17:41:26 GMT 11
O ok, so the governor holds the engine back before it gets damaged by high rpms. Would it be safe to sit on the governed rpm going through a tough section 4wheeling?
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Post by mulover on Apr 5, 2009 18:52:44 GMT 11
If your game to and the governor is working then yes, generally speaking its safe, if i can't "wollow" through a hole then occasionally I'll grab low second or thrid and pin it till i get stuck or get through. When on the road you may find that if you put your foot right down then lift up just a little bit you get more acceration as the governor can hold you back.
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Post by dasnoboarder on Apr 5, 2009 19:30:16 GMT 11
Thanks Mulover, I have noticed that; when passing on the open road, foot to the floor, ok acceleration, but when I lift up a little to slow down, it gives a little surge of more power.
Seems a little silly to limit max fuel when not at the redline. I guess that's why turning up that fuel screw on the pumps helps so much!
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Post by geeves on Apr 5, 2009 20:18:12 GMT 11
They are a good motor and should be an easy fit. Biggest hassle will be getting the motor and your current auto talking to each other. All the change points will be wrong. Best way would be buy a complete motor and box and if you can the wiring loom which seems to be the biggest stumbling block. Much easier with a manual although this means setting up a clutch peddle.
The 4jb1 is a revy motor for a diesel so can be a little slow off the mark but once the revs get up its pretty good.
I wouldnt call the high rev cut out smooth. Running an engine like this cant be good for long life but mines reached 200000km with regular trips to the rev limiter
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Post by bminder on Apr 6, 2009 4:04:05 GMT 11
THis motor doesn't have any electronics running it, does it?
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Post by geeves on Apr 6, 2009 16:44:32 GMT 11
On the originals the only electronics are a simple timer for cold starts (sub 0C) and if its fitted exhaust gas reticulation which everyone disables anyway. This engine was used in the Holden Rodeo (isuzu tFS ute) up to 98 so electronics may of been introduced but not aware of any.
There are various sensors on the engine that talk to the computer for the auto if its auto which tend to catch people out. If its manual they are not there.
Your Rodeo is known as either a Wizard or Frontera in NZ and Australia.
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Post by mulover on Apr 7, 2009 13:54:22 GMT 11
I have started about 4 times and driven about 600 km's on one battery charge,and had to use the wind screen wipers and lights for the last 80 or so km, and the volt meter hardly moved. 650cca battery though.
I hate it when alternators die!!!!
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