20b repu
#1
20b repu
Well i've been driving my newly restored 77 REPU around for about 6 months now. enjoying the crap out of it. if you have not seen it, here is the previous build thread on it
https://www.rx7club.com/old-school-o...1006121/page4/
The original idea was to make it 20B NA. My wallet did not allow me to do it last year but i have now decided to take on the challenge. I will update the thread as i go but i am really taking this thing on blindly. i have searched and searched for 20B REPU's but i find very little on them, I’m sure they are out there, but I haven’t been able to find them. I have found a couple of UTE's in Australia that have turbo 20B's but that about it.
I really have no plans for it other than it will run 3-50mm ITB’s with six 1000 cc injectors. All run by Haltech SP2000. Engine is Bridge Ported built by Kilo Racing, bought it from RulerMark (he went to the Darkside). Other than that…I don’t have any more info.
Here are some pics of the dis-assembly of the old S4 13B NA.
Everything out
Here she is in all its glory….ready to continue living in my friends dad’s first gen, actually its already up and running in the FB
https://www.rx7club.com/old-school-o...1006121/page4/
The original idea was to make it 20B NA. My wallet did not allow me to do it last year but i have now decided to take on the challenge. I will update the thread as i go but i am really taking this thing on blindly. i have searched and searched for 20B REPU's but i find very little on them, I’m sure they are out there, but I haven’t been able to find them. I have found a couple of UTE's in Australia that have turbo 20B's but that about it.
I really have no plans for it other than it will run 3-50mm ITB’s with six 1000 cc injectors. All run by Haltech SP2000. Engine is Bridge Ported built by Kilo Racing, bought it from RulerMark (he went to the Darkside). Other than that…I don’t have any more info.
Here are some pics of the dis-assembly of the old S4 13B NA.
Everything out
Here she is in all its glory….ready to continue living in my friends dad’s first gen, actually its already up and running in the FB
#2
Got a hold of a Turbo II tranny…. Mocked it up into place
Went to mate the engine to the tranny and oh oh…..we have some obstacles in the way!!!!
Took out the trusty saw saw and out went the obstacles
Now that all the obstacles were out of my way I mocked everything up again and found that I needed an additional 4” of room. This means that the existing tranny hole would need to move back 4”. Not what I wanted but there is plenty of room in the cabin to move the whole back 4”. In order to do this I modified the tail shaft of the tranny and modified a new tranny mount. Note, I cannot weld, nor do I pretend to know how to weld so off it goes to a buddy’s shop that does some amazing things!
Went to mate the engine to the tranny and oh oh…..we have some obstacles in the way!!!!
Took out the trusty saw saw and out went the obstacles
Now that all the obstacles were out of my way I mocked everything up again and found that I needed an additional 4” of room. This means that the existing tranny hole would need to move back 4”. Not what I wanted but there is plenty of room in the cabin to move the whole back 4”. In order to do this I modified the tail shaft of the tranny and modified a new tranny mount. Note, I cannot weld, nor do I pretend to know how to weld so off it goes to a buddy’s shop that does some amazing things!
#3
The S4 original tranny mount was modified to fit the TII Tranny and a new cross member was made
Here is the tail shaft mod….there is a really good video on youtube that was done by one of the members here on how to modify the tail shaft…really informative vid.
While the truck is away at the welders…I was able to send some parts out to the powder coater to get coated
Here is the tail shaft mod….there is a really good video on youtube that was done by one of the members here on how to modify the tail shaft…really informative vid.
While the truck is away at the welders…I was able to send some parts out to the powder coater to get coated
#4
Lastly, some work was done removing the old motor mounts and cleaning up the old cross member. The drag link will most likely stay in its place in lieu of modifying it, I will have the oi pan modified to fit around the drag link.
Hopefully in the next couple of weeks the welder can fabricate the motor mounts. I’m thinking of doing an H-Frame similar to the one for the FD? We’ll see what the next couple of weeks holds.
I will update the thread as I have more progress….for now that is all I have
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#10
i highly doubt that its the first but it will be one of a few. i'm sure 20B REPU's are out there...i just have never seen any
well, some progress has been made...not much but we got the trany bolted up and it looks like my measurements were spot on. i have about 1.5" from the water pump pully to the radiator. here are some pics. radiator not in the pics. not that its in place, H Frame will be frabriated and motor mounts built. i will update the thread as i have more....for now enjoy
#14
500+hp club
iTrader: (26)
Not the first. There use to be a 20b repu flatbed running around about 10 years ago in post falls and surrounding areas. Pretty sure his name was Skip.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
#15
Less Cubes, More Balls
iTrader: (4)
Not the first. There use to be a 20b repu flatbed running around about 10 years ago in post falls and surrounding areas. Pretty sure his name was Skip.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
#20
®
iTrader: (4)
very interested in this conversion.... I am looking to drop my 20b into my REPU as well
just some food for thought since you've already hacked the cross member out ... I am going to put rack & pinion steering in at the same time. Thinking about using a 240sx (s13) steering rack since its, what i call a "trailing steering system" where the steering linkage sits behind the "axle" like the REPU is... but it would be just as easy to install a 2nd or 3rd gen rack in by flipping the attachment arms at the knuckles
anyhow, cool project
just some food for thought since you've already hacked the cross member out ... I am going to put rack & pinion steering in at the same time. Thinking about using a 240sx (s13) steering rack since its, what i call a "trailing steering system" where the steering linkage sits behind the "axle" like the REPU is... but it would be just as easy to install a 2nd or 3rd gen rack in by flipping the attachment arms at the knuckles
anyhow, cool project
#22
yeah me too, i dont think it will make the november meet but the goal is to have it done as soon as possible.
Not the first. There use to be a 20b repu flatbed running around about 10 years ago in post falls and surrounding areas. Pretty sure his name was Skip.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
Awesome build keep it coming!
I have debated on putting the 4 rotor in a repu if I can find a donor thats not rusted to hell.
thanks
hell yeah, i watched that vid like 10 times! thanks for posting...it really made things clear for me. i will let you know how it shifts when its up and running
thanks brother....hopefully we can get your 3 and my REPU to meet one day...your just accross the alley right? dont forget, first weekend in November we have our Rotary meet. your more than welcome to join us. look for a thread in the next couple of days in the SE Section
very interested in this conversion.... I am looking to drop my 20b into my REPU as well
just some food for thought since you've already hacked the cross member out ... I am going to put rack & pinion steering in at the same time. Thinking about using a 240sx (s13) steering rack since its, what i call a "trailing steering system" where the steering linkage sits behind the "axle" like the REPU is... but it would be just as easy to install a 2nd or 3rd gen rack in by flipping the attachment arms at the knuckles
anyhow, cool project
just some food for thought since you've already hacked the cross member out ... I am going to put rack & pinion steering in at the same time. Thinking about using a 240sx (s13) steering rack since its, what i call a "trailing steering system" where the steering linkage sits behind the "axle" like the REPU is... but it would be just as easy to install a 2nd or 3rd gen rack in by flipping the attachment arms at the knuckles
anyhow, cool project
thanks....hopefully bring it up to DGRR but i dont know...the FD is so much fun to drive on those roads that it will be hard to leave the FD at home. Anyways, hopw all is well with the 3. Markaham park meet is November, your more than welcome to come down if your interested.
Made some progress in the last couple of days. Decided not modify the drag link so the oil pan was modified to clear the drag link. It looks a lot closer in the pics than it really is, plus the motor is not in its final resting point. Motor should come up another ½” to ¾”
Due to the drag link, motor mounts and header it was next to impossible to install the motor mounts in the rear of the motor as originally intended (At least I could not figure it out). So I sourced a GSLSE front cover from a good buddy of mine and swapped it out for the 20B cover. The front cover was free as I kidnapped his oil cooler and kept it for ransom.
Only problem with the front cover is that it projects out further than the 20B front cover. It’s a good 1” to 1-1/2” longer. Looks like the front of the oil pan will require modification. Now only thing left to complete is new motor mount brackets in the front and re-install everything. Then I can start exhaust and intake manifolds