A Speedi-sleeve question - What to do??

[boltonranger]

Hi fellas - 1988 3.7 motor.
I am replacing the cam seals and adding speedi-sleeves.

I called my local NAPA guy (good guy)
and gave him the measurement I took off the end of the camshaft. (.8172")
My NAPA guy said the rep. needed my seal part no. which I gave him.
He said the rep told him I needed a .875" sleeve which he ordered two of for me.

MY issue is that I supplied them the micrometer
reading of the camshaft which is .8172"

NAPA guy said difference is OK.

I thought the whole point of measuring the shaft was to get the ACTUAL reading not the factory spec.

I'm confused. Can any of you help me understand this?
IS the .875" sleeve going to work for me?

Does the loctite make up the difference?
-br

 

[daydreamer1252]

Re: A Speedi-sleeve question - What to do??

My experience with speedi sleeves says.....won't be close....

Maybe a trip to a bearing shop would be more productive, those guys (and Gals) are always dealing with finding parts by measurements (not part numbers)....

I am surprised that in all the writing about this subject there is not a specific part number referrenced somewhere.....

still a bearing place will likely be your best bet.....

unless Mercuriser has a part number specified for the repair....

Much success.....

 

[boltonranger]

I called a bearing mfgr.

I called a bearing mfgr.

Alright so I called Kaman Industrial - A bearing mfg. co. here locally.
They come up with the same info as the NAPA guy.
-.875

They have a nominal width range of .873" -.877"
Next smallest has a max nominal width of .866"

So essentially I'm in between sizes.

Anyone else experience this problem?
-br

 

[natemoore]

Re: A Speedi-sleeve question - What to do??

I did this exact procedure on my 470 that I rebuilt last year. I just measured the diameter of the camshaft with a digital micrometer and went up to Motion Industries with the measurement. Each Speedi-sleeve size will specify a range of diameters for which it will work. No confusion there. Mine fell within a listed range.

At the risk of being officious, when I installed the sleeves, I had the seals already installed into the timing chain cover. I guestimated the placement of the innermost sleeve, then quickly verified by covering it with black permanent marker, slapping on the timing cover, and giving the camshaft a couple of turns. This way there was no guessing or wondering exactly where on the sleeve the seal is riding. Ditto for the outmost sleeve.

Take care not to drive it too far and you already know about the red Locktite 270.

 

[natemoore]

Re: I called a bearing mfgr.

Re: I called a bearing mfgr.

Alright so I called Kaman Industrial - A bearing mfg. co. here locally.
They come up with the same info as the NAPA guy.
-.875

They have a nominal width range of .873" -.877"
Next smallest has a max nominal width of .866"

So essentially I'm in between sizes.

Anyone else experience this problem?
-br

You said you miked a .8172. This isn't making sense to me. Isn't there a range into which your measurement falls?

 

[daydreamer1252]

Re: A Speedi-sleeve question - What to do??

Are we talking width...... as in depth front to rear or DIAMETER?

Normally around engines, micrometers measure diameter but I guess it could be used differently.....

Again, if we are talking diameter then it won't be close enough if we are talking width then you may be ok, but I haven't actually SEEN the whole application.

good luck

 

[Borchik]

Re: A Speedi-sleeve question - What to do??

natemoore is correct, one sleeve wont be enough so you have to install a couple, and its a guessing game as to where the seal lip will ride. we used to install speedy sleeves but they dont seem to last long, now its new cams and lifters, they are cheap in comparison to having the same issue again and the new cams hold up a lot better than the old ones.

 

[boltonranger]

OOPs what I meant was...

OOPs what I meant was...

Sorry - size of shaft is .8712"
I transposed numbers.
Sorry for the typo and confusion.

The sleeve that the speedi rep. got for my Napa guy is .875" size (Sleeve No. 99085)
(yes; 2 are required)

However -

The sleeve for .875" goes up is from .866" to .875" (Sleeve No. 99812)

The sleeve for .866" (next smallest they offer) goes from .861" to .866" (Sleeve No. 99085)

Since my camshaft measures in between - no one knows what to tell me.

The instructions mention that if the sleeve needs pressed on - then no loctite will be needed. That tells me that perhaps there is some "room" here. IOW they're pre-supposing a looser fit needs loctite.

I've just been wondering if anyone had a cam that miked in between and what they did.

YES we are talking diameter - width is .437" or 7/16ths of an inch.
I don't know if a new cam is even available for this 22 year old motor but I would imagine it's pricey. Most parts for it are.
-br

 

[natemoore]

Re: A Speedi-sleeve question - What to do??

Luckily I saved my receipts, although I don't like to be reminded how much money I poured into this boat.

I used the 99087 sleeve (.873-.877). You miked .8712, so I'd used this one too. Go ahead and use Loctite. Seems it will provide some lubrication. Mine was very snug when it went on, but I didn't have any problems getting the placement correct.

Do what I said using a black permanent marker and you'll know with 100% certainly where the seal lips are riding on the speedi-sleeves. Got mine right in the middle on both sleeves.

 

[natemoore]

Re: A Speedi-sleeve question - What to do??

natemoore is correct, one sleeve wont be enough so you have to install a couple, and its a guessing game as to where the seal lip will ride.

Did you read about my trick using the black permanent marker?