'68 200ci to 250xflow

[Anonymous]

Hey,

has anyone swapped out a pre-xflow 200 for a alloy head xflow 250?

did it bolt straight up?

I have a 68 mustang, and rather then spend 8grand on a V8 conversion a supercharger looks the go at a third of the cost.

The 200's intake/exhaust being on the one side makes it a bit too tight and untidy to use the common [ie cheap] blower kits. there is a football field on the dizzy side.

I'm looking at buying an xf just to donate the disc brakes to the stang, would be nice to transplant the engine and then be able to run on premium and fit a nice looking supercharger.


cheers

 

[Asa]

look in the tech section, Jack went from a 200 to a 250 to a 250 Xflow, documented everything pretty nicely

 

[xctasy]

My thinking exactly. When you look at the air conditioning pumps they had as an option on even the stock 200 six, they are bigger than most centrifugal superchargers sold by CAPA, Vortech, or Toyotas SC12.

The Sprintex supercharger used by Dukeowindsor in his X-flow XF ute is really nice, and should package okay.

My prefference is to keep the stock 200, and shove an Commodore Eaton blower on the side where the air conditioning pump used to be mounted. You could mount the EA Throttle Body EFI to the existing log headed six, and juice it up with a stock Memcal or Calpak GM Delco just like HotRods machine. There is a technical link with these people as they are able to share the ideas.

I'm the last person to suggest every thing be kept orginal. It your call. The supercharger or EFI could be deleated if you ever wanted to sell it, and a reconditined 200 is a very strong little engine.

The bottom end of the 200 isn't as strong as the 250 X-flow, but as long as the transmission is balanced well, and the main bearing and rope seal are in spec the weakness of the crank flange seperating at high revs won't be an issue.

 

[Anonymous]

excellent, thanks guys.

 

[Anonymous]

We chucked the pre crossflow 200 in the Transit for a XE alloy head 250 crossflow. It was easy. The engine mounts are the same, it bolts right up to the geabox, the only thing we found is the engine box on a Transit Mk1 has no room for hte intake manifold on the left hand side, so we had to do a little cut-and-shut. A Mustang would be no problem though. I would reccomend a 250, as it made SOOOOOO much difference when we did it.

I have also done the reverse, putting a pre crossflow 200 in a car prevoiusly fitted with a 250 crossflow. This was my brother's XY ute, originally a pre crossflow 250, but the crossflow that was in it when he got it was stuffed and we had a spare 200 lying around. Once again, dead easy. Nothing more than changing a motor. We had radiator pipe problems in the van, but the radiator is mounted differently than in a Falcon of Mustang, we had to mount it close to the motor, using an early direct drive fan instead of the viscous coupling one, and the radiator shroud is mounted upside down to fit over the fan. Never overheats though.