Just picked up an '87 Wrangler for a mere song. I'm going to change it over
to fuel injection, but don't remember where to buy the Holley projection
Any one with the link?
Or, anyone with a better idea for fuel injection than the Holley?
1987 Jeep Wrangler
4.2L, Poser, bone stock, but all new tub and fenders.
1997 Jeep Wrangler
Thanks, found this, too.
The old Holley kit was called "YJ pro-jection". It may no longer be
I'm really not the one to comment on US suppliers, but try Summit Racing.
I've been happy with their service, but they may not be the cheapest.
Didn't see a version for the 258, but they sell one version for AMC engines
at 851.95 bucks, so I suspect they could get it for you.
Looks a whole lot cheaper than the Mopar version at 2500 bucks !
Dave Milne, Scotland
They're on ebay regularly for usually about half the price of a new one.
Speaking as someone with an 88 YJ with 258 that has a 4.0 head
conversion, Cold air intake, Hesco RVOB06 Cam, Comp Cams Anti-Pump up
lifters. 4.0 header, mandrel bent 2.5 /w Flowmaster, Holley Pro-Jection,
TFI ignition upgrade, Crane double roller timing set... That is sitting
on a block with great oil pressure, round cylinders/walls and good hone
marks with normal compression.
I would estimate that these mods all netted me at most 35 horse power,
most of it down low off idle which is nice but means it's still a pig on
the highway it just doesn't compare to the better breathing 4.0 which
has just as much if not more low off idle torque than the 4.2 but also
revs past 3500 RPM's willingly and more importantly very quickly. My YJ
is still not as powerful at ANY RPM as my stock 4.0, and it's a world
apart from my 4.6 stroked XJ not even half as powerfull if even that.
For the price of a new Pro-Jection kit you can easilly get a running XJ
as a donner, a whole drive train could cost LESS than a used Pro-jection
2d system, which sell for $450 $500 bucks regularly on Ebay. In contrast
I just watched a decent AW4 (4.0 auto transmission from an XJ) with TC,
flywheel, bellhousing, computer and cables sell for $41 dollars.
Best part is, you're only a winter project away from a 4.6 stroker Using
the old 4.2 as a donner for the crank and rods... It's basically
worthless for anything else anyway as no one pays anything for them.
Generally they aren't even worth the cost of shipping them.
Actually maybe the best part is you get rid of that French transmission
and you can use anything from a solid AX15, an NV3550 or a current 6
speed. Which were all mated to the 4.0 in Wranglers and are thus easy swaps.
This isn't the same animal as putting a 350 in it, there's no motor
mounts to weld, no trans mounts or adapters, no new T-case to deal with.
drive shafts aren't an issue Basically it's all bolt in, minor fab or
available off a later YJ (92 to 95) or TJ...
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein
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