coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 25, 2009 10:53:17 GMT 11
Greetings.New Yank here.I am looking at the possibility of putting a 4jb1t /5 speed/ tc into a 1979 IHC Scout II.I have been involved with a couple of 4BD1T swaps, but the JDM 4bj1 package on ebay is cheaper than the individual parts needed to do one on this truck. I think from my search here that the smaller 4 will be plenty powerful enough, but I wonder if anyone can see any problems with this swap.Thanks
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Post by geeves on Feb 25, 2009 11:23:25 GMT 11
How heavy is the scout? A quick google came up with pics but little else
Tare weight of the Bighorn the 4jb1 comes from is 1870kg.
Should be a straightforward swap
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 25, 2009 11:52:20 GMT 11
The Scout weighs about 4600 lbs (2086 kilos) That is with the 345 V8, which weighs as much as a 4BD1T.It currently has 3.54 gears, so quite a change from the 4.77 rears in the Trooper.This Scout will be my son's learning and school car, so high performance is towards the bottom of my 'must have' list. I figure the pay-back period in a 10 mpg slug converted to a 25 mpg speedster will be short.
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Post by geeves on Feb 25, 2009 15:06:24 GMT 11
4.77? Try 4.3 gears or if you got the model with factory 31 inch tyres 4.56. The 4jb1 is more of a revving motor by diesel standards with little power below 1500 revs and the ability to pull all the way to its red line of 4200 but is still fine in a trooper with 4.3 gears and 32 inch tyres. As long as your tyre size is 31 or less it will be fine but wont be a rocket off the mark. You might be selling yourself short on the 25mpg even with the smaller size US gallon Aim for 28 even if you use a auto trans.
Biggest issue you might have is that this engine does tend to smoke at idle due to the nature of the injectors Mines smoking the same now at 200000km as it did at 92000km when I bought it. For the last 4 years its had mostly off road use where it gets driven like it was stolen. It still does 33mpg (imperial gallon) on the open road
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 26, 2009 0:15:06 GMT 11
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Post by geeves on Feb 26, 2009 6:00:32 GMT 11
Thats got a different manifold to the Mu/trooper judgeing by the pics. If you can ask any questions it might be wise to verify that this is the MUA transmission. If its a MS(something) its out of an N series truck which is ok but a far more complicated gear selector set up
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 26, 2009 7:34:47 GMT 11
Thanks.I'll ask.What problems can the other box present?
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Post by geeves on Feb 26, 2009 11:00:41 GMT 11
Only other thing Ive just remembered is that although the Mu (Amigo) and bighorn (trooper) box are the same internaly the Mu has an outrigger for the selector moveing it forwards a few inches. It might not be a problem either way in the scout.
Thinking about the other box choice though they would be the same box that you would of got on the 4bd1 engines so you would already know how to get round that problem if its a problem at all
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Post by Yarno on Feb 26, 2009 18:39:48 GMT 11
That intake manifold is the same as the Jackaroo 2.8l ones...
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 27, 2009 1:43:13 GMT 11
Only other thing Ive just remembered is that although the Mu (Amigo) and bighorn (trooper) box are the same internaly the Mu has an outrigger for the selector moveing it forwards a few inches. It might not be a problem either way in the scout. Thinking about the other box choice though they would be the same box that you would of got on the 4bd1 engines so you would already know how to get round that problem if its a problem at all The 5 speed trannies we get over here are 5th direct; I assume this is an overdrive?They are found in NPR cabovers and are cable or rod actuated.I think the model is MSA-5D.Do they interchange?Thanks. |
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Post by geeves on Feb 27, 2009 6:59:19 GMT 11
There is a 4wd version of the MSA. With your dif ratio they are a good choise as they are 1:1 in 5th where the MUA is about 1.2:1 overdrive.
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 27, 2009 7:10:24 GMT 11
That box looks quite a lot smaller than the MSA boxes I have had.Did they use MSA's in Jackaroos? Do you think that this engine won't be able to pull the o.d gear with a 3.54 ratio?This will be a commuter car, primarily, with occasional logging road forays.The Scout s also had 3.73 and 4.11 offered, with several lower gears now offered. I think I would rather change gear sets and have the extra gear.
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Post by Yarno on Feb 27, 2009 8:23:30 GMT 11
 1989 model... |
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 27, 2009 10:07:54 GMT 11
Looks like the same engine.Are parts easily available (at least there)?Does the intake interchange with the later style?I am still debating weather or not I should just use one my 4BD1T's with a NV 4500 and Dana 300.A bit more work, but I know parts are available here.Doesn't seem to be a lot of interest in the ebay motor...times are tough and fuel is relatively cheap right now so I guess interest in diesel swaps is waning.
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Post by geeves on Feb 27, 2009 10:16:33 GMT 11
The MSA was only for the trucks. A lot of them had column gear change so the extra linkage made setting up easyer. The MUA has the selector where it is so you only need to drill a 4 inch hole in the right place.
The mu had a short gearstick mounted well forward The Bighorn had a longer stick a little further back. If you can find an Amigo and Trooper running the old 2.6 petrol to look at the layout is the same. (All the v6 amigos and gen 2 troopers with V6 were a chevy v6 so no help)
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coog
Isuzu Baby
Posts: 9
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Post by coog on Feb 27, 2009 11:03:14 GMT 11
How rare is the 4wd version of the MSA ? Of course finding one with a right hand drop t.case would be WAY too easy.
The item on ebay was relisted.He has been a little tight with information.Anyone hazard a guess on the length, fan to rear joint?
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Post by geeves on Feb 27, 2009 15:08:02 GMT 11
Its hard to tell from pictures but it looks like the same layout as the MUA so yes right hand drop.
They are not a big motor so fitting in the space a V8 came out of should not be hard. We have a couple of V8 troopers around now and there is no space around the engine at all. I was always under the impression that a V8 conversion could not be done as the V8 was too long.
The 4wd version of the MSA is uncommon but I wouldnt go as far as rare. Could be hard to find on your side of the world.
There is always the common trick used here for engine swaps which is motor of choise and matching trans mated to a Toyota Hilux transfer case which needs an adapter plate to mount but thats all.
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coog
Isuzu Baby
Posts: 9
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Post by coog on Mar 1, 2009 4:37:15 GMT 11
Could you elaborate on the Hilux case swap? Is therea supplier of adapter plates down there?Thanks
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Post by geeves on Mar 1, 2009 8:10:36 GMT 11
Try these people www.advanceadapters.com/newidea.htmlThe big advantage of the Hilux case is that it only has selectors ant the single input shaft and 2 output shafts. The Isuzu transfer case has about 10 things going between gearbox and transfer |
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