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Index > Engine/Drivetrain > Thread: 84 B2000 engine swap
Thread: 84 B2000 engine swap
volksnut


Newbie
Posts: 4
posted August 28, 2002 04:20 PM

84 B2000 engine swap

the ol motor is bad in the pickup and was thinking of a transplant...Rotary power or V6 etc. What should I look for to swap in a rotary, whats involved? whats your thoughts?

         
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jfaplanet


Redlining
Posts: 356
posted August 28, 2002 06:15 PM

84 Swap

Consider the fact that the rotary engine is wider than the frame will allow on the 84 frame. I know from experience. I had a 74 frame grafted to my 84 frame. Next consider the emissions side. If you live where you have to be tested yearly. I love the rotaries but you might consider the stocker and a rebuild or a V-6. Trust me the rotary is a lot of work and even when I finished mine I tried to sell it and couldn't even get a grand back out of it. So I parted it out. Good luck and keep us posted as to what you end up doing. I sitll have the long bed and a bed liner that I am not using if anyone needs one.
____________
74 REPU "Red"
74 REPU "Jethro" "TII"
74 RE-Courier vert
79 SA-SE(aka deathtrap)
79 SA-SE-FC (project
turbo)
http://home.bellsouth.net
/p/PWP-crgj
TN Forum:
http://tnrotary.10.forume
r.com/

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Klaus43


Rotorhead
Posts: 1259
posted August 29, 2002 02:16 AM

Is what went bad the aluminum head? I forget what year(s) especially, but I remember hearing that there's a Mazda piston truck motor that, as the engine displacement was increased, got to the point of not enough metal between the cylinders in the head... so that once they overheat even a little, the head warps and is toast. How about replacing it with Ford's "Iron Duke"? Apparently that motor can be built up quite a bit with no reliability problems...
Of course, nothing else is a rotary! For the true addict, it's surely worth the hassle... Let me guess, Charles--the header has no room in the '84 conversion?

       
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Rotor


Revvin Up
certifiable rotorhead
Posts: 70
posted August 29, 2002 05:21 AM

For the record, the rotor motor will go into later model B series trucks. Maz-Medics in Atlanta built one with an aftermarket turbo. I wasn't involved in the build, but I did work on it later, so I don't know what all they did, but do know they didn't replace the frame.

Also for the record, the "Iron Duke" is a Pontiac engine, not a Ford.

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ROTOR

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rotormunky


Redlining
Orlando, Florida
Posts: 424
posted August 29, 2002 06:10 AM
Edited By: 20wannaB on 29 Aug 2002 06:11

Just how late a model b-series are we talking here?

Right now I have to decide between a REPU and a king cab b-series. There just aren't that many REPUs east of the Mississippi it seems. Unfortunately I need one that's pretty much all there and reliable. My seven needs to be decommissioned for some work and I need that reliable second vehicle for getting to work, the bank, the junkyard, etc. (In that order most likely :)

I figure if I wind up with a king-cab b-series then I can always drop a 13bt in it after my 7 comes back out from under surgery. Granted it won't be a REPU, but I'm beginning to give up on finding one :( I don't mind paying more for someone else's TLC or rebuild as long as its in good shape. I would have paid the $2,800 for hte FI green one on Ebay but it would have cost me another grand to get it to Florida. Yikes!


____________
-Martin
Orlando, Florida

http://www.themonkeyhouse.org/REPU

'77 REPU (Some assembly required :)
'91 Cabrio (Battered and bruised, but she's still my baby.)

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volksnut


Newbie
Posts: 4
posted August 29, 2002 05:55 PM

yeah it's already had a head job :) a while back and looks like it blew another head gasket or ?. I'm tearing it down Saturday to be sure...it's the 2.0

         
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jfaplanet


Redlining
Posts: 356
posted August 30, 2002 05:08 AM

Up to 84

The B2000 thru 84 had a narrow frame. There were a lot of changes for the 86 and newer, one of those may be a wider area between the front A-arms. The header wasn't the only problem with the original frame it was just too narrow to even get the rotary into. Volksnut check out your options on transmissions.

http://members.ij.net/mrmazda/tranchrt.txt

I believe that if you can find a way to keep your gears your first gear is the best of all combination. I believe that you might be able to build a transmission using a RX-7 trans and yours to get the right shifter location and the best gears. Unless you want to change to a newer rearend that has the 3.90 gears.
____________
74 REPU "Red"
74 REPU "Jethro" "TII"
74 RE-Courier vert
79 SA-SE(aka deathtrap)
79 SA-SE-FC (project
turbo)
http://home.bellsouth.net
/p/PWP-crgj
TN Forum:
http://tnrotary.10.forume
r.com/

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Klaus43


Rotorhead
Posts: 1259
posted August 31, 2002 09:06 PM

Sure enough, I don't know my piston motors...

...but what was that (non-toyo-kogyo, I think) more reliable engine option in later couriers anyway? Iron head, too... ? The kind that're hard to blow the head gasket on...

       
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volksnut


Newbie
Posts: 4
posted September 01, 2002 05:51 AM

pulled the head yesterday, being a air cooled vw mechanic this thing sucked...well not really but weird to say the least, those rockers arms, and timing chain...who thought of that! anyway I'll take the head to a shop to have it checked out, but looks like 2 water jackets ( small round holes) between 1-2 and 3-4 are like oblonged to the point where they protude into the combustion chamber? Any thing else to look for..deck looks straight?

         
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Klaus43


Rotorhead
Posts: 1259
posted September 01, 2002 09:46 AM

Assume nothing!

Sounds like one of the problem motors...don't trust that head! My condolences...

       
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jfaplanet


Redlining
Posts: 356
posted October 15, 2002 06:08 PM

84 B2000 frame.

Volksnut, I might would be willing to sell my 84 rotary frame. If you are interested, make me an offer. My email is crgj@comcast.net. Or if your interested in the whole truck I could possible put it somewhat back together. For the right price of course. I believe there are some pics of the frame on my web site.
____________
74 REPU "Red"
74 REPU "Jethro" "TII"
74 RE-Courier vert
79 SA-SE(aka deathtrap)
79 SA-SE-FC (project
turbo)
http://home.bellsouth.net
/p/PWP-crgj
TN Forum:
http://tnrotary.10.forume
r.com/

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jfaplanet


Redlining
Posts: 356
posted October 15, 2002 06:11 PM

pics

Here is one of the pics:

http://mywebpages.comcast.net/crgj/84rear.JPG
____________
74 REPU "Red"
74 REPU "Jethro" "TII"
74 RE-Courier vert
79 SA-SE(aka deathtrap)
79 SA-SE-FC (project
turbo)
http://home.bellsouth.net
/p/PWP-crgj
TN Forum:
http://tnrotary.10.forume
r.com/

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North


Newbie
Posts: 2
posted November 09, 2002 06:20 PM

quote:
...but what was that (non-toyo-kogyo, I think) more reliable engine option in later couriers anyway? Iron head, too... ? The kind that're hard to blow the head gasket on...



You mean the old 4a toyota motors?
they where extreamly reliable, they used them in chevy nova's 86's 87's too

       
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