Oil pump chain tensioner, where can I get one of these?

Trumped by Daniel again . . . guess I'll just wander back to my dark little corner and watch this play out. ;-)

 

roughed in..........
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No truer words ever posted!

 

Brilliant! Um, just curious, but why did the factory not use a tensioner pulley? Seemed it would have been subject to a lot less wear.

 

Im in my 40th year and I have a shop load with the same situation as this. In a number of cases you Can get parts.... but they dont work. "You want it to WORK TOO?"

 

Excellent point Dave - nobody wants to replace garbage with garbage.

 

Awesome Dave!

My shout for beers one day mate!

Put me down for one of them when you get them all sorted mate. I will replace mine when I do the major.

 

Dave, that is a beautiful site man!! Waiting these past few months for this to come to fruition has been filled with anxiety (at least for me, maybe you too). That is just beautiful. And it looks like there are a few more in need than you thought. Crank those babies out!! Damn, I can hardly wait to get "Big Red" back in the stable.

 

I don't know what the heck we would do without Dave. My electronics work because of his connector kit. I'm in the process of upgrading to his hoses so they won't be eaten away or rot from today's fuel/ethanol mixtures.

Actually, I do know what we would do - we would have a lot more cars sitting around undriven for lack of a small frigging part being unavailable.

 

Dave, I've had this question for a long time and no one seems to be able to answer it. When I replaced mine it did not come with the little nipple that rides on the end of the spring. I figure that with the nipple/oil restrictor in place the tensioner pushes a little harder on the chain. The strange thing is that the metal housing already has a restrictor in it. Was my chain tensioner missing the nipple and with that said does it need it, or was it updated? I have been running without it and I have not had any issues. I serviced a friends 348 and his had that nipple in what appeared to be a newer part like mine. Also it has a hole drilled throught the pad material which I can't figure out why since the supplied oil runs out from behind the pad a drizzles down on the chain. What are your ideas on this?
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I made one by myself out of vesconite. No big deal!
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the little hole, is to lubricate the pad, against exessive pad wear I guess.

 

Good job.

After all, it ain't rocket science.

 

Are you sure vesconite will stand up to the internal temperature of the 348 motor? From their website: Temperature rating of Vesconite
Typically Vesconite and Vesconite Hilube are limited to 100° to 120°C (212° to 248°F) in dry conditions and 60° to 70°C (140° to 158°F) in immersed conditions.
For higher operating temperatures, please contact VescoPlastics with details of your application.

 

Cool man, nice work.

Is it fitted and has it held up?

How many miles on it?

 

Nope, it sure isnt.

Chosing the correct material, that's a whole different matter and took months of research. After the rough in machine work I am quite sure the research was worth the time. My pratice pieces were out of nylon, teflon and delrin... all a cake walk to machine, we do that daily for the race cars.

 

To bump an old thread, this is quite interesting.

I have here in my hands the original tensioner from my 1990 348. It is black. I have seen pictures of them also in brown and in white. Curiously, those three colors correspond exactly to what Vesco says are the available variants of Vesconite:

BLACK: This is the standard grade of Vesconite for pump bearing applications. VESCONITE gives an excellent balance between low coefficient of friction, long life, good abrasion resistance, and cost. Limited dry start capabilities. Thrives with water as a lubricant. Good chemical and abrasion resistance. Extended shaft life. No water swell. High dimensional stability.


WHITE: This is the preferred choice when dry starts and low lube conditions exist. Vesconite HiLube is very successful in deep well applications where dry starts can last a minute or more. PV (pressure x velocity) limit is almost twice that of standard Vesconite. Good chemical and abrasion resistance. Extended shaft life. No water swell. High dimensional stability.


BROWN: Vesconite's HiTemp 150 and Vesconite's HiTemp 230 are the choice materials for use above 176°F (80°C) in wet applications. Excellent rigidity and toughness. Low friction. High wear resistance. Good load carrying capabilities. Each product reacts differently to chemicals and radiation – (see chemical resistance chart).

http://www.hydro-watt.com/vesconite/VesconiteProperties.htm

 

Hi guys,

look at the that!
www.maseratiource.com offering chain tensioners for the maserati V8 engines,
we should check the measurements!
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sorry, a mistake:
its www.maseratisource.com

 

Similar (as are Jaguar and MG) but not quite the same.

 

Old school materials, once considered cutting edge. Technology has moved on along with the material price!

I ordered in every English and Japanese car variant I could think of before moving forward on this, all slightly different in design.

Headrips,
Bill wants a handful of these when they are finished... he will have them in hand before yours proves unserviceable.

 

You folks on this thread might want to go check this thread out

http://www.ferrarichat.com/forum/showthread.php?p=139779941#post139779941