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  #1  
Old February 10th, 2009, 10:00 PM
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Trevor K
94 d90 #1304
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Engine donor vehicles

Did a quick Search is there a list of vehicles I could pull a 3.9 engine out of and bolt in to my truck? I don't mind swapping over equipment like fuel injection and stuff. I have a 94 d90 thanks
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  #2  
Old February 11th, 2009, 08:12 AM
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J. Michael McCaig
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If you can't find a D90 engine that someone is swapping out for a diesel then any RRC or Disco 3.9 or 4.0 basic long will work. Main differences will be front timing cover/water pump and belts etc. If you can find a 94-95 it will be very close.
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  #3  
Old February 11th, 2009, 12:07 PM
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Charles Galpin
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Trevor, a Disco 1 has the same engine. If you get one with the serpentine belt, just make sure to get all the ancilliaries with it. Everything hooks up clean, even the wiring with no mods.

hth
charles
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  #4  
Old February 11th, 2009, 12:19 PM
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You want a 1993 or 1994 RRC LWB so you can drop in a 4.2. 1990-1994 RRCs had a non-serp 3.9.

The block itself, will work from pretty much any rover V8.
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  #5  
Old February 11th, 2009, 01:40 PM
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Trevor K
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Quote:
Originally Posted by evilfij
You want a 1993 or 1994 RRC LWB so you can drop in a 4.2. 1990-1994 RRCs had a non-serp 3.9.

The block itself, will work from pretty much any rover V8.
Very cool what kind of up gain could I get? What about the 4.6 conversion ?
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  #6  
Old February 11th, 2009, 03:29 PM
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Trevor K
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Quote:
Originally Posted by JSBriggs
The 4.0 and 4.6 engines are distibutorless, so it is a little more involved than 'drop in' but it still reasonably straight forward.

-Jeff
interesting, is this better then having a distributor?
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  #7  
Old February 11th, 2009, 04:15 PM
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4.2 gets ~20hp and 28ft/lbs

You can put a 4.6 block in with what you have there, just keep the dizzy and the ancillaries. What is wrong with the current motor?

I do NOT recommend going to a serp belt and espeically do not recommend going with GEMS (distributorless).

Ron
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  #8  
Old February 11th, 2009, 04:20 PM
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Charles Galpin
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Agreed on the GEMS - sounds like a big hassle for little gain. But whats wrong with the serp? My "new" motor has a serp and I like it.
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  #9  
Old February 11th, 2009, 04:30 PM
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Nothing in particular, more just that it is an added level of complication to an otherwise easy swap and you have to get some new pretty high dollar parts (like the shroud).
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  #10  
Old February 11th, 2009, 04:32 PM
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Andrew Najarian
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I've always wondered about swapping in a Bosch 4.6. What all would you need aside from the harness and ECU? I know they run a different fuel pressure, so I would have to change pumps but what other problems would you run into with sensors etc.?
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  #11  
Old February 11th, 2009, 06:04 PM
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Trevor K
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Quote:
Originally Posted by evilfij
4.2 gets ~20hp and 28ft/lbs

You can put a 4.6 block in with what you have there, just keep the dizzy and the ancillaries. What is wrong with the current motor?

I do NOT recommend going to a serp belt and espeically do not recommend going with GEMS (distributorless).

Ron
So a 4.6 block will use the same distributor and ecu ?
I overheated my engine really bad 2 summers ago and it has caught up to me with warped heads that leak everywhere and I have severe power loss... 115 k out of the motor seems ok with me so I'm investigating my options a full swap to domestic seems too pricey with the current economy and a kid on the way...
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  #12  
Old February 11th, 2009, 06:11 PM
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Buy new [or used] long block [3.9, 4.0, 4.2, 4.6 all will work], new cam, lifters and rockers, and swap over everything else. Easy as it is going to get. You need a crank spacer for the 4.0/4.6 but you can use and old ctiming chain gear with the teeth knocked off.
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  #13  
Old February 12th, 2009, 07:54 AM
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Bryan Tate
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I have everything you need to convert it to 4.6. We converted 2 this summer. I have pulled aside a 95 disco timing cover for just that occasion, full serpentine kit and I can "turn" you a spacer.
Give me a shout if I can help. Next question is wouldn't you want an automatic now?
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  #14  
Old February 12th, 2009, 08:01 AM
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Charles Galpin
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Quote:
Originally Posted by Stmpede
I've always wondered about swapping in a Bosch 4.6. What all would you need aside from the harness and ECU? I know they run a different fuel pressure, so I would have to change pumps but what other problems would you run into with sensors etc.?
Can someone answer this question?

What else is this ECU going to expect to be around? If it cares about all the fancy sensors it has for everything doesn't this affect the way it runs and performs?

thanks
charles
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  #15  
Old February 12th, 2009, 09:07 AM
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Bryan Tate
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wouldn't you need wheel speed sensors, crank positioning sensor?
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  #16  
Old February 12th, 2009, 09:25 AM
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My two cents...

Start with a good 3.9 block, get a 4.8 stroker kit. More umph than a 4.6 without the hassle of swaping to a distributor-less engine. 4.6 blocks were more prone to porous block than the 3.9.

All bang, fewer bucks.
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  #17  
Old February 12th, 2009, 11:18 AM
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Andrew Najarian
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Quote:
Originally Posted by btate
wouldn't you need wheel speed sensors, crank positioning sensor?
Well, I would think the Crank sensor would just plug into the engine harness. Like Charles said though, what about things like wheel speed sensors. I would think that you could work that out like the '97s, but I don't know what other similar things you would run into.

Quote:
Originally Posted by landrovered
My two cents...

Start with a good 3.9 block, get a 4.8 stroker kit. More umph than a 4.6 without the hassle of swaping to a distributor-less engine. 4.6 blocks were more prone to porous block than the 3.9.

All bang, fewer bucks.
I am not saying that I am going to do it, I used to think about it, but I don't know that it would really be worth it. The thought was that the Bosch makes more power (I think, it sure feels like it does) and they are inexpensive. For that much trouble I would probably just put a diesel in, but I like to reason these things out.
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  #18  
Old February 12th, 2009, 11:36 AM
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Bosch has an input for the electrically controlled auto trans.
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  #19  
Old February 12th, 2009, 12:07 PM
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Bryan Tate
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well the cranksensor needs the correct "flywheel" with the teeth on the back. Will that mate to a r-380? (hope I got the terminolgy correct). Basically I explored it and seems to open up a huge can of worms.
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  #20  
Old February 12th, 2009, 01:09 PM
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Trevor K
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Quote:
Originally Posted by landrovered
My two cents...

Start with a good 3.9 block, get a 4.8 stroker kit. More umph than a 4.6 without the hassle of swaping to a distributor-less engine. 4.6 blocks were more prone to porous block than the 3.9.

All bang, fewer bucks.
i've never heard of a 4.8 stroker kit, do you have a link?
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