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jeffros 58
Samba Member
Joined: January 01, 2009
Posts: 349
Location: jackson mi
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 Posted: Sun Feb 28, 2016 4:24 pm Post subject: Cam replacement questions |
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Well I know I'm in the 53-57 forum but felt question would get a better answer here . Found a new motor for my 58 which is 3 weeks off build date of car . One I'm using is a 1956 motor . Split case and found cam is worn on one lobe and followers also . Will get new followers but I have a cam that I think will work the one on right in pics . Will remove gear and rerivet It to cam . Lobe hight is the question can not find lobe dim. Have three cams and find lobe overall dim. The same within .003 or so except for worn lobe cam .cam gear is a -3 so will use it with the case . Also what's up with the rear main bearing being drilled ?? Found this on a motor I split also on a motor I split years ago? Case pin is fine and is not oval.
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txoval
Samba Member
Joined: January 23, 2004
Posts: 3552
Location: The Woodlands, TX
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| Posted: Mon Feb 29, 2016 8:16 pm Post subject: Re: Cam replacement questions |
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I recommend you talk with Matt at www.aircooledresearch.com
He can regrind your best cam to his Stage 1 or 2 specs. Go with straight cut gears and the gear size issue goes out the window. I run straight cut gears on my 36, no whine noise. |
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 24759
Location: Olympia Wash Rinse & Repeat
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| Posted: Tue Mar 01, 2016 10:11 am Post subject: Re: Cam replacement questions |
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| jeffros 58 wrote: |
| Also what's up with the rear main bearing being drilled ?? Found this on a motor I split also on a motor I split years ago? |
If you mean the hole just below the main bearing. It is probably an extra oil drain hole. The stock hole for this is above the inner lip of the fly wheel seal, so when you shut down the engine the oil pools in that area and drips out the seal because the crank is not spinning to pump the oil back into the case.
Been doing same with later engines. Brazil stock engines even had a channel cast into the cases to drain this area.
Below shows the German stock higher drain, the lower one we drill, and the Brazilian cast in one.
Here is the front of the above:
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In Stereo, Where Available! |
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Jetjockey1964
Samba Member
Joined: January 30, 2016
Posts: 19
Location: Oregon
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| Posted: Wed Aug 17, 2022 1:40 pm Post subject: Re: Cam replacement questions |
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Could the 6 ocklock hole be drilled without splitting the case? I’m considering doing this. My plan would be to take off the head on cylinders 1/2, remove cylinder on 1 reach to the back of the drilling point to catch the bore materials. Replace the main seal with an adequate oil drain port and reassemble.
Does anyone know if this could be done?
Thank you! I’m too leaky! |
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 24759
Location: Olympia Wash Rinse & Repeat
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| Posted: Wed Aug 17, 2022 1:51 pm Post subject: Re: Cam replacement questions |
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| Jetjockey1964 wrote: |
| Could the 6 ocklock hole be drilled without splitting the case? |
Have done that on assembled engines with the flywheel and seal out of the way. Just be sure to miss that big stud hole in the case. I like to have a spare open case to visualize to drill down at a bit of an angle and still miss that stud hole. It is more of a 7 O'clock hole, as long as it is going to be below the lowest point of the FW seal inner edge.
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In Stereo, Where Available! |
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sunroof
Samba Member
Joined: October 06, 2006
Posts: 1773
Location: Winnipeg
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| Posted: Wed Aug 17, 2022 9:23 pm Post subject: Re: Cam replacement questions |
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Apropos of nothing. I sent 3 cams to Canadian Chrome Plating in Ontario because I did not want to send them out of country and got badly burned. I will remember this guy for the next time.
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I recommend you talk with Matt at www.aircooledresearch.com
He can regrind your best cam to his Stage 1 or 2 specs. Go with straight cut gears and the gear size issue goes out the window. I run straight cut gears on my 36, no whine noise.
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Don
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sgmalt46
Samba Member
Joined: April 20, 2005
Posts: 1296
Location: south san francisco
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| Posted: Wed Aug 17, 2022 10:16 pm Post subject: Re: Cam replacement questions |
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Matt of (aircooledresearch.com) passed away about 2 years ago.
cancer took him.
Steve.
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55 deluxe 23 window bus
64 crew cab
55 rag top beetle
66 beetle
71 square back (sold) ! good luck with it Henry!
46 beetle 552nd royal army service corps CCG |
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