Should it be pinned? Not too sure I have good enough equipment to do it myself.
Pinning Intermediate Shaft?
- Thread starter Bodyperson
- Start date
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I think its just a blemish. The one I am using for priming did not have a pin but it sure took a lot of effort to drive it off. Ill double check it.
Man, if they pinned it, they sure did a good job of disguising it. Ill try to contact the manufacturer. Not sure why I went with this company.
Closed on Friday.
shown: pinned & not pinned
if you're not making big power, not pinned is okay.
if you're not making big power, not pinned is okay.
mopowers
Well-Known Member
Has anyone seen a quality pressed on gear slip on the shaft?
Melling HV pump. pretty warm 340. 350 ponies if I do my job correctly.shown: pinned & not pinned
if you're not making big power, not pinned is okay.
frankly, i wouldn't worry about it and just send it.
[prepare for a wave of dissenting opinions]
See post 15. If you are under 100 psi there is no way you need a pinned shaft.
That is a relic from the days of single grade 50 and 60 oils that even at 200 degrees flowed like ****.
Send it.
Thanks guys.
remytherat
Well-Known Member
Most I've seen have not been pinned. As long as the bottom still has ridges you're good....
Not sure what this means.
the lower part that's hexed, where it engages the oil pump drive, should have crisp edges. no wear or rounding out.
which if yours is new, should be just fine and dandy.
Yes, it is fine and dandy. I just checked all of the engagement with the cam and distributor and it is all good. It is a new shaft.
ship it!
Now if I had just measured the pushrod length correctly.
All the factory drives I have seen were NOT pinned. It is so easy to pin them for peace of mind that I would do it. Without the pin, you rely solely on how tight the interference fit is....& hope the person did a good job.
MOPAROFFICIAL
If it has tits, it's a liabilititty.
I'll just say this I've never built an engine from scratch that I didn't have a hardened/pinned Gear in... yet I've never had a stock V8 that ever spun the gear that i know of. Now I have built many engines and one of the 390 Ford FE Motors that I built received a high volume oil pump to which the stock oil pump Drive used twisted and snapped upon firing the engine. Deduce and choose. HV/HPSI pump =hardened shaft males sense to me.
To each their own.
To each their own.
It's hardened. I kinda sorta already had this disscusion in another thread. It fits well. Engages the distributor nicely. Very little lash.
Ironmike
Well-Known Member
I wouldn't install an UNpinned unit in my worst enemy's engine. Just too risky for me to think about. I got other worries.
mopowers
Well-Known Member
Have you seen a quality unpinned unit slip?
mopowers
Well-Known Member
So, is the argument - since you don't know the interference fit, you must pin it?
How about this - Have you seen any intermediate gear slip on a shaft? If so, which one and under what conditions?
Not sure I've ever heard of it happening. I always thought the hex at the bottom was the weak point - even on unpinned units. Who knows?
No, never heard of one slipping. Does that mean it can never happen? No. Considering how easy it is to add the pin, it is a good safety measure. Don't forget many folks use thicker oil or stronger oil pump spring, both of which put more load on the drive.
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