4g63 swap

straightarrow · Post by **straightarrow** » Mon Jan 19, 2009 3:53 pm

Hello all. New here but I've been surfin' mightyd50 for awhile. I have a question about swappin. Can I use the O.E. clutch from my '80 Arrow with a FWD flywheel or do I need to rig up the hydraulic setup? Also, is water cavitation in the head a big enough problem if you do a water pipe coming out of the front of the head and block off the back? This will be a non-turbo daily driver. Thanx.

Gentleman Rogue · Post by **Gentleman Rogue** » Mon Jan 19, 2009 10:27 pm

i cant help you with the clutch question, but i can share what my plans are for solving the stagnant coolant in the back of the head worry-

i have the Jay Racing thermostat housing relocation kit that moves the thermostat housing to the front of the engine. there is a simple block off plate that bolts in place of the thermostat housing on the back of the head, so i am planning to just drill/tap a hole in the plate for a 90 degree AN fitting, and run a single decent sized AN line to the front of the engine, probably up into the bottom side of the thermostat housing. my thinking is that if the coolant gets that much hotter at the back of the head, then the pressure will be greater there and the line will offer some relief and a bit of flow. my engine builder is very confident in the idea, having utilized similar setups on circletrack engines.

there seems to be a number of ways to deal with the lack of flow at the back of the head, this is just what i am going to try to do. good luck!

straightarrow · Post by **straightarrow** » Tue Jan 20, 2009 1:52 pm

When are you planning to have your car running? I haven't started the swap in my truck until I get these details (clutch and intake) sewn up. I might buy a used rwd intake if the price is right.

Gentleman Rogue · Post by **Gentleman Rogue** » Tue Jan 20, 2009 4:37 pm

im trying not to set a deadline- as we all know what usually happens to them. i have pretty much all the parts i need, but its hard to get motivated in -20 degree air with -40 windchills. its starting to get nicer here, so i plan to get out and really get back on the project now...i'll keep things posted in the member rides section

89coltgt · Post by **89coltgt** » Tue Jan 20, 2009 11:11 pm

The stock arrow clutch flywheel will work, I believe the nt fwd flywheel witll also work with you stock clutch.

straightarrow · Post by **straightarrow** » Wed Jan 21, 2009 2:50 pm

This swap looks pretty straight forward except for rear head clearance problems. Is that true? Another site said he's only seen two swaps where the car is driveable. What could be so hard about it?

89coltgt · Post by **89coltgt** » Wed Jan 21, 2009 5:53 pm

The biggest issue seems to be firewall clearance when using the stock mounts. As long as you get the firewall clearance, the stock drivetrain bolts right back in.