Messages

16

General Buick Tech / Re: Timing Cover

« on: May 11 2018, 08:56:57 AM »

Thanks Guys,

This is my first time pulling and reinstalling the front cover. I'll just install the cam sensor once the cover is on.

TW

17

General Buick Tech / Timing Cover

« on: May 10 2018, 08:57:18 PM »

OK,


I just installed a new cam and lifters. While I had the front cover off, I did the earlbrown mods. My question is, can the front cover be installed with the cam sensor already inserted into it (with the engine set up at 25 ATDC)?  Ya never know till you ask


TW

18

General Buick Tech / Re: Girdled Block, Cam Bearing

« on: May 05 2018, 11:58:03 AM »

Thanks for the heads up on the images Daveismissing and Scoobum. I'll give it a shot.

19

General Buick Tech / Re: Girdled Block, Cam Bearing

« on: May 05 2018, 10:10:19 AM »

Hmmm?, a magnetic drain plug  . Sure, I have one of those.


BTW, are the images i'm posting coming through? I'm not having much luck on inserting pics or doing an attachments.


TW

20

General Buick Tech / Re: Girdled Block, Cam Bearing

« on: May 04 2018, 08:24:30 PM »

Hey Earl,


Thanks for the info. In my original post I put, "It's my understanding. .." I guess my understanding was somewhat incorrect. This is the same engine I PM'd you about that didn't have much oil on the driver's side. Your diagnosis was a oil galley plug spit out the front on the driver's side, well guess what I found 
like you were right     but I still haven't found the rogue plug, I bore scoped inside the pan and hadn't found jack.


I appreciate you help Earl, so have a beer on me  . As for the bearing problem, I'll install the new set.

21

General Buick Tech / Girdled Block, Cam Bearing

« on: May 04 2018, 12:46:00 PM »

I have a 87' GN with a girdled 109 block. I'm in the process of changing my cam and cam bearings due to the lobe on cylinder #3 going flat. I pulled the front cam bearing and it had "Clevite SH1448" on it. I ordered an new set of Clevite "SH1448S" bearings as replacements. This is my concern, the front cam bearing I pulled has a small groove cut in it and the replacement bearing DOES NOT. The groove is in the outer radius of the bearing and extends on an angle from the centerline to the outer edge.


My understanding is that on a stock (non-girdled) block, there is an oil slinger on the front of the crankshaft that provides lubrication to the timing gear set and the cam sensor drive gear. On a girdled block (on mine anyway) there isn't an oil slinger on the crankshaft. My assumption is that on a girdled block, oil gets to the timing gear set and the cam sensor from the small groove cut into the outer radius of the front cam bearing. That is, oil traveling around the groove in the blocks front cam journal travels through the small groove on the backside of the bearing and sprays oil onto the timing gear set.


My question is, does anyone know of someone that sells the front cam bearing that has the groove cut in it?


I'm fairly new to this and I have made some assumptions but I hope I've explained it well enough for someone out there to understand  .


Any help is appreciated,


TW