250Xflow 84DA Front Main Seal

[StarDiero75]

Howdy to down under,

So I'm rebuilding my 84DA 250xflow and I'm looking at possibly upgrading the front main. Is the front main the same as the precrossflow/US engines? I'm going to a 4.0 SOHC romac balancer with a trigger wheel and serpentine setup. What I'd love to do, if it's the same OD and ID of a 5.0 seal, is to modify the cover to allow for the front install type seal. I'm traveling for work and trying to order things so I can be ready when I get home to do this, otherwise I'd measure myself. There doesn't seem to be a lot of info on the internet.

Thanks!

 

[aussie7mains]

I think the front seals are all the same, however if you want to run the seal further forward (pushed in from the front) you may run into an area on the balancer where the seal does not ordinarily run, Best to check. The timing cover comes off very easily on these engines, and seals last a long time, is it really worth the bother? How are you going to run a serpentine (polyvee) belt on the water pump, getting the correct one might be an issue. Seems like a lot of trouble for little gain, unless your planning to drive a supercharger with the polyvee belt. I run one for this purpose on my crossie. BTW, if this is your thinking the 6 rib of a stocker might not be able to drive a supercharger without slip. I run an 8 rib and I get slip above 10psi, and 3500rpm.

 

[StarDiero75]

I think the front seals are all the same, however if you want to run the seal further forward (pushed in from the front) you may run into an area on the balancer where the seal does not ordinarily run, Best to check. The timing cover comes off very easily on these engines, and seals last a long time, is it really worth the bother? How are you going to run a serpentine (polyvee) belt on the water pump, getting the correct one might be an issue. Seems like a lot of trouble for little gain, unless your planning to drive a supercharger with the polyvee belt. I run one for this purpose on my crossie. BTW, if this is your thinking the 6 rib of a stocker might not be able to drive a supercharger without slip. I run an 8 rib and I get slip above 10psi, and 3500rpm.

Hey man! It's something I ran I to when building my 351W. I used to think they were all installed on the backside until I saw a late model timing cover and thought it was genius. It's a want, not a need. Just curious and doing a little research.

In regards to the serpentine setup. I'm going to run a V belt style system using a serpentine (non self tensioning). I just need to find an aftermarket serpentine pulley for the water pump similar to that on my 351W. I'm doing this for space. I was originally going to run dual v belts but it's going to be really tight with the foxbody radiator and fans.

I'm actually doing a turbo setup. I originally wanted to do a supercharger when I was going to build a 200 aussie 2v head but I traded the whole 2V head for a 250xflow engine. I'm actually getting a quote from 6boost for their turbo exhaust manifold on Monday and then I'll be asking Custom Alloy Welding to make me a turbo style intake for multiport efi. I'm in the process of picking up a XF distributor but the gentleman I'm buying it from is having a hell of a time trying to find a harness plug for it. Got a spare sitting around?