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CH 270 Engine rebuild project
- irobertson
- Scurvy Dog
- Posts: 11
- Joined: August 12th, 2016, 9:41 pm
- Vessel Info: 1983 Carver Riviera 2807
- Location: Ontario
- Been thanked: 2 times
Re: CH 270 Engine rebuild project
- bud37
- Admiral
- Posts: 4684
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 550 times
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Re: CH 270 Engine rebuild project
- irobertson
- Scurvy Dog
- Posts: 11
- Joined: August 12th, 2016, 9:41 pm
- Vessel Info: 1983 Carver Riviera 2807
- Location: Ontario
- Been thanked: 2 times
Re: CH 270 Engine rebuild project
- waybomb
- CYO Moderator
- Posts: 2409
- Joined: February 5th, 2013, 9:24 pm
- Vessel Info: 1995 Boston Whaler Rage15
1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glasspar / 1967 Johnson Electromatic 85
1996 Boston Whaler Rage 15 - Location: Saint Joseph,Mi
- Has thanked: 50 times
- Been thanked: 399 times
Re: CH 270 Engine rebuild project
Id stay with gear drive.
Fred
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572 ci
1995 Boston Whaler Rage
Past - 1988 2807, 1989 4207 Aft
-
- CYO Supporter
- Posts: 5812
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 432 times
- Been thanked: 1588 times
Re: CH 270 Engine rebuild project
irobertson wrote:Source of the post ....abandon the geared cam drive on the reverse rotation engine, and do timing chains on both.....
WHY?
- bud37
- Admiral
- Posts: 4684
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Re: CH 270 Engine rebuild project
irobertson wrote:Source of the post Cams and cranks look good. However I'm not planning on reusing the cams. My guy is saying I should abandon the geared cam drive on the reverse rotation engine, and do timing chains on both. I'm inclined to agree with him. He can provide me with a set of matched cams, one LH one RH, and the reverse cam has the distributor gear cut the other way, so the dizzy & oil pump maintain correct rotation. The next step is ordering two sets of .030 over pistons and having them fit to the bores, and having the cranks properly inspected and polished. This is going to be a year long project, taking my time and just going through each step as $$ become available. I also have a list of things that need to be done to the car
Only thing I might ask him, would there be an issue with thrust load direction on the distributor ?.....actually the gear drive is cool, you will never have chain stretch or timing wander and you get that whine lol......
- irobertson
- Scurvy Dog
- Posts: 11
- Joined: August 12th, 2016, 9:41 pm
- Vessel Info: 1983 Carver Riviera 2807
- Location: Ontario
- Been thanked: 2 times
Re: CH 270 Engine rebuild project
- bud37
- Admiral
- Posts: 4684
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 550 times
- Been thanked: 1145 times
Re: CH 270 Engine rebuild project
irobertson wrote:Source of the post Thanks for the feedback. I will discuss with him. I did ask about the thrust on the dizzy, but the new pump/dizzy drive gear would be cut at the opposite angle, and the dizzy gear would change, so thrust would still be the same. His position on this may just be his experience, he is a well respected race boat engine builder.
Cool....sounds like you are in good hands there.......keep us posted ... there are no good days if you don't learn something....
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