questions on gm 1226867 DJU TBI system

[Shannen Durphey]

Stowe, Ted-SEA wrote:
> 
> hi.
> 
> I am slowly moving to put this gm 4 cyl 2.0 L tbi system on my 77 mgb. it is
> out of a 85 Pontiac sunbird.
> 
> I am trying to ascertain if I should worry about the following info.
> I'd appreciate any advice.
> 

> the EPROM/calpak I have thinks that it will be in a 2.0 tbi, non-closed
> loop, no AC, 3 speed auto thm 125 automatic, with a 3:18:1 final drive.
> 
> this is a 4 speed manual 1.8 litre, (no ac), 3.909 final drive.

> should I worry about getting a different calpak and EPROM ? maybe something
> with a manual trans ?
> 
> how would I figure out what my calpak and EPROM choices are ?
> 
GM dealership should be able to help.  The closest match I can find is
85 cavalier/sunbird, 2.0l, 4spd trans, 3.32 final drive.  Chip part no
is 1228360.

> I see that a mempak is used in later ECU models, is this some kind of
> consideration?
> 
> also I need to get an external fuel pump, in the required psi range. does
> anyone have any good suggestions ? I know that the jetronic-d in the Porsche
> 914 would work and is a vaguely similar size. I think it put out 20+ psi.
> most of the pumps I see are internal pumps which I can't use.
> 
Ran a GM TBI vehicle in for a "rescue" the other day.  Called parts
store, gave them required pressure range, they gave me an inline pump. 
This was a "pulse" type pump, and I'm told that won't work, but it did.

> oh minor detail, the air cleaner, it appears that with my downdraft
> manifold, I will be very close to the top of the hood already, so I have to
> come up with some sort of plumbing that goes off to the side, and adds as
> little height as possible.
> does anyone have any thoughts about this ? I need to use something that has
> an air filter, etc.
Old Jeeps, maybe some other 1940's or early 50's vintage vehicles had
that type of stuff.  Back in the days when the valves were in the
block.  Maybe get creative with a K&N type and some ductwork.  The
really serious swappers spend many hours walking through wrecking yards
looking for the right parts.
Shannen

> thanks a lot, and thanks a lot for all of the excellent prior help. I would
> not of got his far without it.
> 
> Ted Stowe