Re: Calling all Clintons!
Posted: Thu Sep 22, 2022 9:14 am
A few questions to those who have posted so far.
Is that 4-port E-65 only the intakes? As in two added like on a Westbend 5 port?
** Similar. I added a pipe from the crankcase to the back of the bearing plate that adds to the normal 3 ports
What is a 5-port E-65?
** The same modification as done to make a 5 port A4XX like GoPower did back in the day. Chris Marchand has a GoPower A4XX. See the pic.
What do you do about the exhaust on an outboard engine?
** The Clinton 751 block I used had a normal exhaust. I'll try to remember to take a picture.
Does the E-65 run well converted to a bushing engine? Like replacing the needles with a floating bushing? Is compression too high to be reliable as a bushing conversion?
** Never tried to convert one to bushing. I don't think the compression differs greatly, as you can interchange the pistons.
The 500 Clintons (1961 and later version of A4XX) had revised/higher compression pistons than early A4XX.
Can you fill the lower ring groves on a stock E-65 piston and only run the top one with good results? Would high temp epoxy maybe work or cut a aluminum dummy to replace the lower rings?
** I have run fewer rings (normally 3) on E65's by annealing one or two of the rings. I heat them until they are cherry red, which removes the 'spring' they normally have. That way, they don't cause friction by dragging/rubbing/sealing in the bore.
GoPower A4XX
Is that 4-port E-65 only the intakes? As in two added like on a Westbend 5 port?
** Similar. I added a pipe from the crankcase to the back of the bearing plate that adds to the normal 3 ports
What is a 5-port E-65?
** The same modification as done to make a 5 port A4XX like GoPower did back in the day. Chris Marchand has a GoPower A4XX. See the pic.
What do you do about the exhaust on an outboard engine?
** The Clinton 751 block I used had a normal exhaust. I'll try to remember to take a picture.
Does the E-65 run well converted to a bushing engine? Like replacing the needles with a floating bushing? Is compression too high to be reliable as a bushing conversion?
** Never tried to convert one to bushing. I don't think the compression differs greatly, as you can interchange the pistons.
The 500 Clintons (1961 and later version of A4XX) had revised/higher compression pistons than early A4XX.
Can you fill the lower ring groves on a stock E-65 piston and only run the top one with good results? Would high temp epoxy maybe work or cut a aluminum dummy to replace the lower rings?
** I have run fewer rings (normally 3) on E65's by annealing one or two of the rings. I heat them until they are cherry red, which removes the 'spring' they normally have. That way, they don't cause friction by dragging/rubbing/sealing in the bore.
GoPower A4XX