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-   -   1970 20' Repower (http://www.classicseacraft.com/community/showthread.php?t=24174)

luisp305 06-17-2012 03:18 PM

1970 20' Repower
 
3 Attachment(s)
Hello guys I posted for some help on repowering my Sea Craft. I bought it with a 250hp yamaha and it was sitting low in the back. I repowered it with a 130 E-Tec and the boat rides amazing! I had 4 people on it with a full tank of full and was running 39mph. Most importantly the boat sits perfectly in the water. Thanks everyone for the advice! Here are some pics. I added before and after photos, let me know what you think.

McGillicuddy 06-17-2012 04:11 PM

Huge difference, good choice. Boat looks very sharp.:cool:

Bushwacker 06-17-2012 04:11 PM

Now that's how a SeaCraft should sit in the water! I gather that you're satisfied with that motor! These boats don't need a lot of power if they're set up and balanced right. Curious to know how much your min planing speed changed and what your WOT rpm is with that load? Here's a great web site you should check out that will tell you optimum WOT rpm for your motor: http://www.etecownersgroup.com/post/...u-2011-5396435 Motor is at optimum height when the AV plate is completely out of water when you're up on plane and fully trimmed out for normal cruise.

If you haven't already done so, I'd strongly recommend you run only XD100 oil and have the dealer set the ECM for it. It's more expensive but you'll use less of it and the motor will build up a lot less carbon. My dealer buys it in bulk and I believe sells it at close to cost. Last gallon I bought was $35 a few months ago and it's good for 100-150 gallons of gas!

jorgeinmiami 06-17-2012 05:56 PM

Nicw setup am envious of the Engine and that T Top

See you soon at Mashta Point !!

Blue197320 06-17-2012 09:19 PM

that looks like coconut grove

gofastsandman 06-17-2012 09:30 PM

Quote:

Originally Posted by Bushwacker (Post 204096)
Now that's how a SeaCraft should sit in the water! I gather that you're satisfied with that motor! These boats don't need a lot of power if they're set up and balanced right. Curious to know how much your min planing speed changed and what your WOT rpm is with that load? Here's a great web site you should check out that will tell you optimum WOT rpm for your motor: http://www.etecownersgroup.com/post/...u-2011-5396435 Motor is at optimum height when the AV plate is completely out of water when you're up on plane and fully trimmed out for normal cruise.

If you haven't already done so, I'd strongly recommend you run only XD100 oil and have the dealer set the ECM for it. It's more expensive but you'll use less of it and the motor will build up a lot less carbon. My dealer buys it in bulk and I believe sells it at close to cost. Last gallon I bought was $35 a few months ago and it's good for 100-150 gallons of gas!

Cheaper than trolling at 50-1.

Why is he so much smarter than I?

Cheers,
GFS

strick 06-17-2012 10:04 PM

Do you have a jack plate on that bracket?

strick

luisp305 06-17-2012 11:53 PM

Yes I have a jack plate

Islandtrader 06-18-2012 08:33 AM

The whole combo looks great...Good Job!

YeA 20sF 06-18-2012 08:46 AM

Looks like Nixon beach in the first two pics. Boat looks amazing bro, really dig the Ttop and bracket.


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