rxforspeed

iTrader: (3)

I've been searching for about the last half hour or so and I haven't been able to find a single write-up on the installation of an FC water pump and housing into an SE 13b. I know this swap is required if you purchase and run a Camden SC, but I had the opportunity to pick up a good FC assembly awhile back and I've noticed that it's also lighter and the water pump itself has extra ribs and appears to be stronger than the stock SE counterpart...

Does the FC model flow more water? What other benefits are there to installing this into an FB? What about the extra hole on the FC housing that's right in the path of the water inlet/outlet on the front iron? There's also a clearance issue with the SE front cover, but I'm sure I can grind down the water pump housing in the offending area to clear it. Has anybody recently done this, or know what else I need to do that I may be overlooking? Thanks for your time, help, and cooperation...

Crit

iTrader: (6)

There aren't any flow benefits to running the FC water pump. You get a second coolant temp sender if you want to use it for EFI, you get the lighter weight, and that's about it.

The only significant change is that you don't have a hole in your front cover to accept the extra bolt inserted at the far right side, but you will have a leak if you don't do something about it. Most folks (myself included) open up the hole on the rear side of the water pump housing enough that you can sink the head of a socket-headed cap screw so it's shouldered inside the water pump housing, but doesn't stick out the back such that it would crash into the front cover. This cap screw then sits flush on the back side, pokes through the front, and allows you to tighten that corner of the water pump to prevent leaks.

From then on, it just bolts up like normal.

rxforspeed

iTrader: (3)

Thanks, that was my main concern. I'll make sure I gather some parts and hardware that won't disturb the water flow but still allow me to get a good "bite" inside the iron to secure the housing to...

BTW-you've got some good lookin' rides, Crit. Good luck with the SE!

Crit

iTrader: (6)

Thanks for the compliment, and the SE is driving me crazy. I thought EFI was supposed to be SIMPLER than carbs....

I just wanted to ask why you need to get a "bite" into the iron. You should be able to sink a cap screw into the housing and attach the pump to the housing with that one bolt, then slip it onto the existing studs like normal. Are you planning something different?

BTW, you'll want to use a 12A water pump gasket (2 holes, not 3) and plenty of hylomar or RTV to get it all together, because you can no longer get intimate contact along the right side of the housing. You'll need to be careful to get a seal with the head of the screw along the mating surface.

Crit

iTrader: (6)

BTW, I found my old engine-painting post, complete with shots of the water pump housing.

https://www.rx7club.com/old-school-other-rotary-63/assembled-short-block-paint-job-pics-471699/

rxforspeed

iTrader: (3)

OK-I thought you meant to shoulder the bolt against the iron, and that's the "bite" I was referring to. You could do that, couldn't you? If you had a long enough bolt to double-nut the end as it poked through the water pump and still fit the retaining nut, you could shoulder a hex-head bolt on the iron, clamping the housing to the iron along with the pump. That was my first impression when I read your first reply, and I thought that maybe you had mistakenly referred to the bolt as a "socket-head cap screw". My bad-I see what you mean now. Thanks for the correction!

3rd and final 7

iTrader: (9)

what i did with the extra hole was tapped and put a bolt into it. i used a metric tap set so i was able to use some old hardware.

Crit

iTrader: (6)

Yeah, you can clearance the hole in the front, tap the housing, and you're in business. In my case, I wanted it to look original, so I passed the screw in from the back. Probably not worth the effort for most folks.

3rd and final 7

iTrader: (9)

i get what your saying, i had to read it again to catch it. that would give it a much like it is suppose to be that way bc one mine there a bolt heat that is bigger than the others.

BTW that is beautiful work that did to the engine