Bellhousing for RWD conversion - Nissan Forum
SR-Series Engines (DE/VE) Engine Discussion: G20, 91-94 Sentra SE-R, NX2K, 95-98 200SX SE-R, 98-01 Sentra SE

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post #1 of 30 Old Feb 3rd, 2006, 10:49 PM Thread Starter
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Bellhousing for RWD conversion

I have done some research and am looking for a bellhousing. I am looking to make a SR20 RWD conversion using a FWD engine. Why? Availability of the engines and I don't want to run the turbo. The information that I have found indicates that the SR20DET RWD engine block doesn't have a common rear face of case with the FWD. My idea is obtaining a bellhousing for a FWD and then adapting it to the transmission. Anyone have an extra bellhousing laying around?
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post #2 of 30 Old Feb 5th, 2006, 10:40 PM
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First off...I do not believe there is any bellhousing that will allow you to put a fwd engine on the rwd transmission. The fwd, and rwd transmissions are COMPLETELY different shapes...no way you could "adapt" the fwd bellhousing to a rwd trans(at least not cost effectively). You are correct about the two not bolting up directly. The main problems I see with the fwd engine in the rwd car: The distributor will point straight into the firewall(and I don't think it will clear it either), the coolant inlet/outlet are pointing in the wrong direction, the oil pan setup is wrong for the rwd chassis, and im not sure if the engine mounting points are the same(in fact im pretty sure they aren't). What car are you doing this swap on and why? Why do you want the non turbo sr20de instead of the det? If your goal is to get more power...you are headed in the wrong direction. But if you are still intent on obtaining a fwd sr20 bellhousing, and think you can make it work, I can pull one from one of my spare transmissions(pm me if you are intersted, and we will discuss it - I have a few pics as well)
Quote:
Originally Posted by Rob E
I have done some research and am looking for a bellhousing. I am looking to make a SR20 RWD conversion using a FWD engine. Why? Availability of the engines and I don't want to run the turbo. The information that I have found indicates that the SR20DET RWD engine block doesn't have a common rear face of case with the FWD. My idea is obtaining a bellhousing for a FWD and then adapting it to the transmission. Anyone have an extra bellhousing laying around?

Last edited by chris859; Feb 5th, 2006 at 10:44 PM.
post #3 of 30 Old Feb 5th, 2006, 10:44 PM
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to go from fwd to rwd would be a waste of money. its better to buy a 240sx. but essentially, you will need to custom fab a tunnel for your axel to go to the rear axel. you will need a custom rear axel and suspension. You will need to make the motor mounts for your motor to sit in. Cut some of the firewall away, etc.... not a very simple project.

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I can't wait until Hurrican Jamal sweeps up the east coast and steals the wheels and stero out of your car
post #4 of 30 Old Feb 6th, 2006, 01:06 AM
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psulemon, I think you mis-understood him...for some odd reason it seems like he wants to put a fwd engine, into a rwd car...aka putting a sentra/200sx engine in a 240sx. At least I think - we will know more when he replies.
post #5 of 30 Old Feb 6th, 2006, 09:36 AM
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Quote:
Originally Posted by chris859
psulemon, I think you mis-understood him...for some odd reason it seems like he wants to put a fwd engine, into a rwd car...aka putting a sentra/200sx engine in a 240sx. At least I think - we will know more when he replies.
sorry, you are right.. I dont know why he would want to do that, the SR20DET blacktop and redtops are just as prevalent at the FWD. Even so, he would have to use the exhaust manifold and IM from the RWD motor. Either way, its still a very hard and pointless task.

Quote:
Originally Posted by hendrix
I can't wait until Hurrican Jamal sweeps up the east coast and steals the wheels and stero out of your car
post #6 of 30 Old Feb 8th, 2006, 09:07 AM
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Well Rob there isn't any issue with availability of RWD SR20's so I'm not sure where your info came from there. If you really don't want to run a turbo then what you should do is buy a SR20DET for your application and rebuild it using NA parts from a USDM SR20 that you could get anywhere. It might take some time but it's easier then trying to properly fabricate a custom bell housing.

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post #7 of 30 Old Feb 8th, 2006, 10:02 AM Thread Starter
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Thanks for the input to all. Sorry I was not more descriptive and informative in my original post. The car in question is a tube-frame, B13 bodied, race car. (Think of a late-model with a 4cyl engine). The reason that I want to use a FWD engine is that currently I have 2 SR20DE engines out of B13's and ultimately I want to run a SR16VE in the car. I figure that once I have adapted the SR20 into the car the SR16 will just be an engine swap. I know that there are issues with intake and throttle body. (solution; IR or tig welder) and distributor (solution; it will actually fit in the chassis or DIS) and also oil pan (solution; dry-sump). Mounting is not a problem as the only limitation that I have is that the front spark plug has to be on the front axle centerline. Thanks especially to chris589 as the offer for a bellhousing may be just what I need.
post #8 of 30 Old Feb 8th, 2006, 11:22 AM
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If you have two sr20's from a B13, then there isnt an issue, they are FWD. the SR16ve is FWD. You just need the SR20 tranny.

Quote:
Originally Posted by hendrix
I can't wait until Hurrican Jamal sweeps up the east coast and steals the wheels and stero out of your car
post #9 of 30 Old Feb 8th, 2006, 08:14 PM
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Quote:
Originally Posted by psuLemon
If you have two sr20's from a B13, then there isnt an issue, they are FWD. the SR16ve is FWD. You just need the SR20 tranny.
Them being fwd...is his issue - the race car is rwd
post #10 of 30 Old Feb 8th, 2006, 10:46 PM
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Quote:
Originally Posted by chris859
Them being fwd...is his issue - the race car is rwd
isn't he racing a sentra. or did i miss what hes running.

Quote:
Originally Posted by hendrix
I can't wait until Hurrican Jamal sweeps up the east coast and steals the wheels and stero out of your car
post #11 of 30 Old Feb 9th, 2006, 01:18 AM
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You missed it...lol it is a sentra body, on a tubular racing chassis - why? I don't know...but thats what it is
post #12 of 30 Old Feb 9th, 2006, 09:16 AM
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^^^^It's an SCCA class.

I miss my twins...R.I.P. (91 and 92 SE-R)

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post #13 of 30 Old Feb 27th, 2006, 11:23 PM
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Quote:
Originally Posted by Rob E
I have done some research and am looking for a bellhousing. I am looking to make a SR20 RWD conversion using a FWD engine. Why? Availability of the engines and I don't want to run the turbo. The information that I have found indicates that the SR20DET RWD engine block doesn't have a common rear face of case with the FWD. My idea is obtaining a bellhousing for a FWD and then adapting it to the transmission. Anyone have an extra bellhousing laying around?
You may find a better answer here:
http://forum.pulsar.org.au/index.php

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post #14 of 30 Old Mar 2nd, 2006, 02:19 PM
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if think you're going to run into issues with the accessories as well as the placement of the intake manifold.

FWD and RWD blocks are different..........also placement of the distributor.

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post #15 of 30 Old Mar 16th, 2006, 05:37 AM Thread Starter
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Just to bring everyone current with my situation. Chris 859 has sent the bellhousing from the gear box that he was selling. I gave him a few bucks and he was very quick and communicative about the process, I would recommend him to anyone looking for parts. I have the bellhousing and the transmission that I plan to use sitting side by side (side by each to Canadians) on the floor and am working out all of the measurements required to build an adaptor for the conversion. I have cut the drive flange area for the front wheel drive axle off and think that I can make a pretty simple plate to bolt the two together. First step will be to ream the throwout bearing hub to accept the front of the transmission as that should keep the input shaft centered and help line everything up. I'll keep everyone posted here.
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