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  #1  
Old July 14th, 2012, 12:07 PM
drewpick
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Drew Pickard
1994 D-90
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New engine

I took my 1994 D-90 into local shop because it was making a knocking noise. He told me the head gaskets are blown. He said it could be the sleeves in the cylinders and if so it will need a new engine. Does anyone have experience with putting a new/rebuilt engine in a D90? I don't know that is makes sense to spend $2600 redoing the heads and not just putting a rebuilt engine in the truck. Any idea where to find a rebuilt engine and what it would take to put it in. Looking for suggestions from experienced D90 owners. Thanks
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  #2  
Old July 14th, 2012, 12:26 PM
parovertech
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john palita
1973 series III,
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d90 engine

I have access to a reman 4.6l shortblock set up to use in a distributor ign rover. Its one of the ones atlantic british was selling a while ago, but they no longer stock them. My cost on it is $3950 plus ship. PM me for more details
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  #3  
Old July 14th, 2012, 05:23 PM
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cgalpin
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Charles Galpin
'94 D90 ST, '63 SeriesIIA
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Drew, any 3.9L engine from a Discovery 1 of similar years (i think up the 96) are an almost direct drop in - just make sure it's the 14CUX and not GEMS. The front cover is like a 95 D90 so it has a single serpentine belt so will need the ancilliaries or swap front covers. But you have lots of options in terms of finding a low mileage replacement or rebuilds. Also the design is basically a old buick engine so there should be lots of people able to rebuild them - it's not some exotic foreign engine. See this site for info

http://aluminumv8.com/

And I don't know how far away Pendy is from you but he rebuilt a disco engine for me years ago and I am very happy with it - in case you want to go with a trusted source and contributor to d-90.com

charles
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Old July 14th, 2012, 05:49 PM
The Dro
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Dro
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Quote:
Originally Posted by cgalpin
Drew, any 3.9L engine from a Discovery 1 of similar years (i think up the 96) are an almost direct drop in - just make sure it's the 14CUX and not GEMS. The front cover is like a 95 D90 so it has a single serpentine belt so will need the ancilliaries or swap front covers. But you have lots of options in terms of finding a low mileage replacement or rebuilds. Also the design is basically a old buick engine so there should be lots of people able to rebuild them - it's not some exotic foreign engine. See this site for info

http://aluminumv8.com/

And I don't know how far away Pendy is from you but he rebuilt a disco engine for me years ago and I am very happy with it - in case you want to go with a trusted source and contributor to d-90.com

charles
94 and 95. The 96's are GEMS.

Also, you can look for RRC's.

Discos are pretty cheap now a days.
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  #5  
Old July 14th, 2012, 06:00 PM
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Ray_G
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Ray Gerber
54 S1 86", 96 D1 (Coyote), 06 D3
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Quote:
Originally Posted by rrc.swb View Post
94 and 95. The 96's are GEMS.

Also, you can look for RRC's.

Discos are pretty cheap now a days.
Segueing off Pedro, when you look at the RRC's you can consider the 4.2 out of a LWB for a minor bump in power compared to the SWB or D1 3.9.
r-
Ray
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  #6  
Old July 14th, 2012, 06:59 PM
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Scott
1997 D90 ST #1444
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You may want to get a second opinion. If you do end up needing a motor, you have lots of options.
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  #7  
Old July 14th, 2012, 07:16 PM
pushngo
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Randy Williams
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Any serp belt 3.9, 4.0, 4.2 or 4.6 will fit you need to change the front cover and add the distributor gear on most of them Bosch engines have a different cam setup not that you would want one of those

BTW it is rare to slip a liner in a 3.9 from what I have seen
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Old July 15th, 2012, 06:47 AM
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Quote:
Originally Posted by pushngo View Post
BTW it is rare to slip a liner in a 3.9 from what I have seen
In the last 10yrs I have had 8 3.9s with the pressurized coolant *syndrome*. 3 of them have had a slipped liner, and one of those had 2 ( it also had 1 collapsed lifter and a huge hole punched in the oil pickup screen as well as so much sludge and gunk in the motor I had to spoon out the cylinder head to get at the head bolts.... lol). The rest were head gaskets.

For a while it seemed every DII w/ 4.6 that showed up had a slipped liner........like 1 a week. Thankfully I don't work on them! That would get annoying.
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