older PCM 351 pulleys

Mine are pretty scaled up and are chewing up the belts. I was looking to replace the crankshaft and engine circ pump pulleys.

Apparently, these things are hard to come by. SkiDim only had an alum. replacement for the crank....no circ pump pulley available.

Any tips on where to find a couple steel replacements?

thanks!!
-Chow

Zack,

Has anyone converted V pullies to serpentine.
I've been holding on to a set off a truck take out engine.
Maybe make a bushing to adapt the power steering pulley to
the RWP?
My silver would look sooooo cool with a stainless wire cage
around the serpentine pullies!

BuffaloBFN wrote: The inside faces of the pulleys can be cleaned up with a section of belt wrapped with sandpaper/emery cloth. Good paper will take light oil and improve the results.

Bill,
Greg is correct. Unless a sheave has been exposed to the weather for years, I've never seen one that couldn't be cleaned up. Chuck them up in the lathe and give it a try. Clean them up in both directions.

When was the last time you checked the alignment? That is the #1 cause of belts getting chewed up.

I'm betting he has one for metal and one for wood.

What size is the raw water pulley? I've seen some power steering pulleys that sure look close.

74Wind wrote: I would be curious to hear...how many people actually have a lathe?

I have one 3&4 jaw chucks, face plate ect.. it was my Dad's.
Perfect for hobby stuff.

Waterdog wrote: Zack, Has anyone converted V pullies to serpentine. I've been holding on to a set off a truck take out engine. Maybe make a bushing to adapt the power steering pulley to the RWP? My silver would look sooooo cool with a stainless wire cage around the serpentine pullies!

Not that I know of. PCM didn't even go serp until 04 after the Ford was out of production.

I am sure you could get something to work if you put your mind to it but it would be completely custom. I know you could probably buy pulleys from a company like March racing.


Or make friends with a buddy with a CNC and blocks of billet aluminum.

Do you have any rubber dust piles(small and sometimes tough to ID)? They shouldn't wear much when they are straight.

Yup - piles of rubber dust. Very easy to ID :)
Hence the need to do 'something' to fix it.

Considering the Circ pump pulley is an irreplaceable relic...looks like i'm trying to clean 'em up.
Then again, maybe the alignment is whacked.

I'm a bit surprised that there's no cross-match to an automotive part on that Circ pump.

Thanks for the info guys!
-Chow

ChowHound wrote: Then again, maybe the alignment is whacked. I'm a bit surprised that there's no cross-match to an automotive part on that Circ pump. -Chow

Pulleys being out of alignment is a fairly common occurance. Put a straightedge agroos the face or the back side of the crank pulley or the circlation pump pulley to the pulley of RWP or alt. and you'll see immediately how far off they are. Need to use a little boaters engineering to put washers or spacers in the mounting brackets to get everything lined up.

You won't find an automotive cross-reference because the circulation pump is marine specific.

There should be no reason that you couldn't find some pulleys online at a place like Summit. Steel, billet aluminum, CNC. You make the choice.

They have pulleys laid out by engine size, pulley diameter, mounting holes, short or long water pump housing (Chevy), number of belts or even overdrive/underdrive diameters.

I did this with my rebuild but that was Chevy. I found the pulley diameters to be close but not exactly as OEM and I had to experiment with different length belts afterward but everything worked out fine. It was not as simple as just buying a kit and replacing them though.

You'll never find an exact match of the OEM diameters if you're looking to go with a dressup aftermarket aluminum setup. How bad you want to do it vs. how much effort you want to expend to do it is up to you, but I'm positive it can be done.

Mine is a different engine with similar issues. I should've mentioned that.

The smart money will clean the arrestor and carb if so equipped.

BuffaloBFN wrote: Mine is a different engine with similar issues. I should've mentioned that. The smart money will clean the arrestor and carb if so equipped.

Smart money runs out quickly.
:)

Absolutely! I cleaned the arrestor twice in the two months of use she got last year. I can see a little buildup on the carb choke flap so, I'm sure some got ingested.

-these are the reasons I want to get this done. I can swap belts and dust off the motor pretty quickly/painlessly. I don't like the ingestion.

Alignment will be checked, and sandblasted they will be.

Not to derail the thread but, I never had much luck rebuilding Holleys.
Any fuel additives out there that could clear my arteries? - Tripple dose of SeaFoam and an Italian tune-up?

Thanks guys - very informative all around.
-Chow   

ChowHound wrote: Not to derail the thread but, I never had much luck rebuilding Holleys. Any fuel additives out there that could clear my arteries?

They aren't so plug-play. With what I know now, what I would look for is a few minutes on the site engine. There are several folks here who know what's up.