quattro.pilot
Well-Known OPE Member
- Local time
- 8:18 AM
- User ID
- 15343
- Joined
- Jan 12, 2021
- Messages
- 44
- Reaction score
- 88
- Location
- Leduc, AB
I'd like to ask for suggestions and technical diagnosis as to this problem I'm experiencing....which I don't believe should be happening.
I've put a 47mm Hyway "357xp" big bore cylinder on the 357 case and consistently now I'm finding that the base gasket doesn't appear to be sealing uniformly somehow. Charge pressure is being able to escape the crank case and get under & around the base gasket along 2 sides of the cylinder.
Can anyone suggest how things are leaking or how the charge pressure is getting under the gasket? Is it a case that I'm running just too pig rich?
Both the machined mating surfaces of the case and cylinder are perfectly true & flat.
Is using a Hyway base gasket part of the problem?
I'm wondering if the excessive width/size of the impulse channel (of the Hyway 47mm cylinder) as compared to the gasket is somehow contributing to this problem? That's one of the few notable differences I can see between the OE 357xp cylinder and the Hyway 47mm version.
This problem has me stymied thanks in advance to anyone able to help.
I've put a 47mm Hyway "357xp" big bore cylinder on the 357 case and consistently now I'm finding that the base gasket doesn't appear to be sealing uniformly somehow. Charge pressure is being able to escape the crank case and get under & around the base gasket along 2 sides of the cylinder.
Can anyone suggest how things are leaking or how the charge pressure is getting under the gasket? Is it a case that I'm running just too pig rich?
Both the machined mating surfaces of the case and cylinder are perfectly true & flat.
Is using a Hyway base gasket part of the problem?
I'm wondering if the excessive width/size of the impulse channel (of the Hyway 47mm cylinder) as compared to the gasket is somehow contributing to this problem? That's one of the few notable differences I can see between the OE 357xp cylinder and the Hyway 47mm version.
This problem has me stymied thanks in advance to anyone able to help.