1972 18' Greavette Sunflash IV psudo-blog
- Thread starter Sean
- Start date
Sean
Well-Known Member
Just back from the dyno.
the good news... the engine is tight, no leaks, great oil pressure and seems well put together.
The bad news...we had carburettor issues with the brand new edelbrock carb. first a sticking float, then tuning issues (with no replacement parts) despite installing the manufacturers reccomended calibration kit.
So, we have ordered a tuning kit and will try again next tuesday (after the long weekend).
The weather is perfect this weekend so I'll be working in the bilge.
the good news... the engine is tight, no leaks, great oil pressure and seems well put together.
The bad news...we had carburettor issues with the brand new edelbrock carb. first a sticking float, then tuning issues (with no replacement parts) despite installing the manufacturers reccomended calibration kit.
So, we have ordered a tuning kit and will try again next tuesday (after the long weekend).
The weather is perfect this weekend so I'll be working in the bilge.
Sean
Well-Known Member
Vacuumed, cleaned and painted the engine bay bilge today. Then painted the new engine cradle and gave the bottom of the boat(below the water line) a new coat of copper anti-foul.
Tomorrow, I'll do a second coat in the bilge and I will make new decking for each side of the engine bay and cover it with vinyl and aluminum trim. If there's time left over I might start the Bennett trim tab installation.
Tomorrow, I'll do a second coat in the bilge and I will make new decking for each side of the engine bay and cover it with vinyl and aluminum trim. If there's time left over I might start the Bennett trim tab installation.
Sean
Well-Known Member
BIG News...Friday back from the engine dyno!
Got the little fire breather all dialed in. Lots of oil pressure, fuel pump works and she runs smooth like a kitten then pulls strong up to redline.
Nice flat power curve too.
Max HP 235.7 @ 5100
Max torque 273.5 @3500
Today I reinstalled the bilge ducts, hoses and pump. finished the trim on the engine room deck. Started sorting out the cabin deck.
she goes in the shop Monday to have the gimble housing installed and the engine fitted.
Got the little fire breather all dialed in. Lots of oil pressure, fuel pump works and she runs smooth like a kitten then pulls strong up to redline.
Nice flat power curve too.
Max HP 235.7 @ 5100
Max torque 273.5 @3500
Today I reinstalled the bilge ducts, hoses and pump. finished the trim on the engine room deck. Started sorting out the cabin deck.
she goes in the shop Monday to have the gimble housing installed and the engine fitted.
Sean
Well-Known Member
The boat went in today to have the t-plate and gimble assy fitted.
Unfortunately there was a depression from the old drive when it as removed so we may have to cut and fill a bit.
For even worse news...Once I got the new engine cradle in place I went over all the measurements. It looks like the oil pan mod was not enough...so, I need to have a new custom oil pan made.
This might take two weeks! Yikes, my deadline may be shot...
Unfortunately there was a depression from the old drive when it as removed so we may have to cut and fill a bit.
For even worse news...Once I got the new engine cradle in place I went over all the measurements. It looks like the oil pan mod was not enough...so, I need to have a new custom oil pan made.
This might take two weeks! Yikes, my deadline may be shot...
Sean
Well-Known Member
Good news...Ordered a custom pan to clear the frame. and it will only take a week! (no too expensive either.) One problem solved.
Bad news...the depression on the transom around the gimble hole is only the beginning. The wood is not flat anywhere (using a framing square). The old MR drive had a thick cork gasket that sealed the gap...they don't have those gaskets for Alpha One.
It gets worse...upong checking, the new transom was made only 1.75" thick. (Merc spec in min 2" , Max 2.5"). So, the drive shaft will be too deep in the gimble. not sure how to fix this one. Add to the inside? or the outside and fix the non level surface at the same time?
Bad news...the depression on the transom around the gimble hole is only the beginning. The wood is not flat anywhere (using a framing square). The old MR drive had a thick cork gasket that sealed the gap...they don't have those gaskets for Alpha One.
It gets worse...upong checking, the new transom was made only 1.75" thick. (Merc spec in min 2" , Max 2.5"). So, the drive shaft will be too deep in the gimble. not sure how to fix this one. Add to the inside? or the outside and fix the non level surface at the same time?
Sean
Well-Known Member
So, for a distraction....I ordered my new SEI SE106 drive today.
Went with the 1.47 ratio. Ordered a couple of trim cylinders too.
Should be here by friday.
My marine Tech also called today. looks like we are going to add to the outside of the transom (It's easier to work there). The mahogony spacer will be the exact outline of the drive gimble and faired to the transom. Of course it's "another Thousand" !
Went with the 1.47 ratio. Ordered a couple of trim cylinders too.
Should be here by friday.
My marine Tech also called today. looks like we are going to add to the outside of the transom (It's easier to work there). The mahogony spacer will be the exact outline of the drive gimble and faired to the transom. Of course it's "another Thousand" !
Sean
Well-Known Member
Drive showed up at the front step yesterday...Wow that was fast!
It was packed nicely and looks great.
I still pulled the SE106 stickers and will reinstall my vintage (metallic red) Mercruiser stickers. these are hard to come by so, I'll wait to make sure this is the drive for me.
It was packed nicely and looks great.
I still pulled the SE106 stickers and will reinstall my vintage (metallic red) Mercruiser stickers. these are hard to come by so, I'll wait to make sure this is the drive for me.
Sean
Well-Known Member
Well, The transom fix was fantastic! You can't even tell it's been done. The rebuilt (and powdercoated) gimble assembly is back on the boat. The T-plate is secure and torqued. the steering is hooked up too.
The hitch this week was the "Y" pipe didn't have enough clearance from the decks either side of the engine.... So I have removed them, cut them down, made new trim and built new supporting framework tying into the original mounts for the old framework. It looks good.
I also installed new bilge vent hoses. I used stock car bumper brake ducts and duct hose to make sure it is functional, and of good quality. I installed the mounts for the battery box so now all is secure there.
Next steps:
1) I'm waiting on a new custom oil pan that should be here this week.
2) I am looking into a custom fuel tank (it might be the only solution that fits)
3) ordered a new "torpedo" low profile type bilge pump to clear the oil pan.
4) ordered a fuel/water seperator
5) ordered a fuel vent surge protection valve
Geez, I hope I can get all this together before the end of the month...fingers crossed!
The hitch this week was the "Y" pipe didn't have enough clearance from the decks either side of the engine.... So I have removed them, cut them down, made new trim and built new supporting framework tying into the original mounts for the old framework. It looks good.
I also installed new bilge vent hoses. I used stock car bumper brake ducts and duct hose to make sure it is functional, and of good quality. I installed the mounts for the battery box so now all is secure there.
Next steps:
1) I'm waiting on a new custom oil pan that should be here this week.
2) I am looking into a custom fuel tank (it might be the only solution that fits)
3) ordered a new "torpedo" low profile type bilge pump to clear the oil pan.
4) ordered a fuel/water seperator
5) ordered a fuel vent surge protection valve
Geez, I hope I can get all this together before the end of the month...fingers crossed!