Auto to Manual swap series - how to convert the AT cooler to a dual setup
#1
Auto to Manual swap series - how to convert the AT cooler to a dual setup
I am going thru my second Manual transmission installation into an automatic car and thought I'd offer some info for those doing a conversion in the future. I am getting several e-mails on how to do this mod so I'll try to make this a series of information reporting to my fellow forum members on the progress during this current MBM project.
Right now I am working on the Dual Oil cooler setup using the existing Auto tranny cooler as the second engine oil cooler. I done this exact procedure on my VR project and it works great. I did my research, my plans, my engineering years ago and perfected it on that car. So right now I am gathering the parts to do it all over again...on the MBM project.
This is where I am at now.
So for this writeup - how to convert the auto tranny cooler into a second engine oil cooler during a manual swap
The first problem is that the auto tranny cooler ( one on the pass side ) has nipples for 3/8" hose instead of the fittings for stock R1 type hoses. No problem, we'll convert them to -10an hose. For this segment I used Summit racing STEEL -10an X 1/2" npt fittings and CUT OFF the 1/2" npt end. Has to be steel, not aluminum ( for welding to the stock steel fitting ) As you go thru the pics, you will see I cut off the 1/2" npt end and dressed it up flat. Then I took the stock "nipple" fittings out of the cooler and drilled straight thru from the cooler side of the fitting to "cut off" the nipple ( used @ a 31/32 drill bit or one close to 1/2" ). This not only cut off the nipple but opens up the passage to match the -10an fitting. Better oil flow.
Then I welded the -10an fitting to the OEM fitting ( minus the nipple ), drilled it straight thru again for good flow, Sandblasted it, painted it, clear coated it and use the existing gaskets re-installed it on the pass side oil cooler. Ready for -10an hose fittings now.
Wait until installment #2 on the other end of the hoses
Right now I am working on the Dual Oil cooler setup using the existing Auto tranny cooler as the second engine oil cooler. I done this exact procedure on my VR project and it works great. I did my research, my plans, my engineering years ago and perfected it on that car. So right now I am gathering the parts to do it all over again...on the MBM project.
This is where I am at now.
So for this writeup - how to convert the auto tranny cooler into a second engine oil cooler during a manual swap
The first problem is that the auto tranny cooler ( one on the pass side ) has nipples for 3/8" hose instead of the fittings for stock R1 type hoses. No problem, we'll convert them to -10an hose. For this segment I used Summit racing STEEL -10an X 1/2" npt fittings and CUT OFF the 1/2" npt end. Has to be steel, not aluminum ( for welding to the stock steel fitting ) As you go thru the pics, you will see I cut off the 1/2" npt end and dressed it up flat. Then I took the stock "nipple" fittings out of the cooler and drilled straight thru from the cooler side of the fitting to "cut off" the nipple ( used @ a 31/32 drill bit or one close to 1/2" ). This not only cut off the nipple but opens up the passage to match the -10an fitting. Better oil flow.
Then I welded the -10an fitting to the OEM fitting ( minus the nipple ), drilled it straight thru again for good flow, Sandblasted it, painted it, clear coated it and use the existing gaskets re-installed it on the pass side oil cooler. Ready for -10an hose fittings now.
Wait until installment #2 on the other end of the hoses
#4
RX-7 Bad Ass
iTrader: (55)
Neat stuff! Question - why not just buy an AN to metric adapter? For example -
http://www.paragonperformance.com/ADPTRS6.html
Scroll down to part number PP-2245. 18mm x 1.5 to -10AN - I checked, and the banjo bolts on the engine side are 18mm x 1.5 - if that's not it, I'm sure that fitting is out there somewhere.
Not knocking the welding, just wondering if there's an easier way.
Good stuff!
Dale
http://www.paragonperformance.com/ADPTRS6.html
Scroll down to part number PP-2245. 18mm x 1.5 to -10AN - I checked, and the banjo bolts on the engine side are 18mm x 1.5 - if that's not it, I'm sure that fitting is out there somewhere.
Not knocking the welding, just wondering if there's an easier way.
Good stuff!
Dale
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#10
Irregular Here
iTrader: (14)
I have an automatic car that I am installing an aftermarket trans cooler into so I want to use the factory trans cooler as an added oil cooler.
For parts I have a set of R1 lines and an extra oil cooler to scavenge fittings from (the oil cooler is damaged so I can't just use it).
Is it possible to just weld the factory female quick connects to the trans cooler so that it will accept R1 lines instead of AN hose?
For parts I have a set of R1 lines and an extra oil cooler to scavenge fittings from (the oil cooler is damaged so I can't just use it).
Is it possible to just weld the factory female quick connects to the trans cooler so that it will accept R1 lines instead of AN hose?
#11
There is now an apprentice cooler expert on how to convert your trans cooler - contact Islanders Rx7 on this thread below
https://www.rx7club.com/forum/showthread.php?t=795395
Later
https://www.rx7club.com/forum/showthread.php?t=795395
Later
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