Boats For Sale:
NEW MOTOR TALK |
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trn448s 
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Joined: May-23-2010 Location: Lake Lotawana Status: Offline Points: 27 |
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 Topic: NEW MOTOR TALKPosted: December-08-2020 at 10:15am |
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I have an 87 ski nautique with 1100 hrs on it. Heads are leaking oil and seems to be wearing down. The talk is replacing the long block, adding gt40 heads, updating distributor, intake manifold, carb then slapping all accessories/hoses back on. I'll probably paint the motor black or grey blah blah blah. Question is am I missing something by just buying a whole complete motor? Cost to rebuild is around 6k. I want something to bolt on to existing 1:1 velt drive and dual exhaust. TIA!
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MrMcD
Grand Poobah 
Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3750 |
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Posted: December-08-2020 at 12:14pm |
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If you know the history on this engine you could install new heads and run it many more hours. My 78 needed heads at 1000 hours due to a burned valve, with new heads it ran fantastic till we sold it with 1500 hours.
If your block did not have proper service it may be shot.
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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Posted: December-08-2020 at 12:18pm |
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Where exactly is the oil leak coming from on the heads? That might be a first...
6k for a rebuild seems fat. Does that include all labor, r&r, etc? |
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trn448s
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Joined: May-23-2010 Location: Lake Lotawana Status: Offline Points: 27 |
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Posted: December-08-2020 at 1:27pm |
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its either a gasket or bolt issue. Most of the bolts appear to be a pain to remove because of rust or deterioration. I have had the boat since 400 hrs. I plan on doing a whole exterior reno as i have already done the entire seats/carpet package.
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trn448s
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Joined: May-23-2010 Location: Lake Lotawana Status: Offline Points: 27 |
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Posted: December-08-2020 at 1:29pm |
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6k was entire package. Pull motor, rebuild, paint, re-install.
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3363 |
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Posted: December-08-2020 at 4:09pm |
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I concur. in my experience, extrapolating back to 1100 well cared for hours does not require junking the short block, nor even an overbore. Compression test, inspect, if good it gets fresh bearings and pump, seals and chain, install your heads and cam of choice and send it.
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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trn448s
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Joined: May-23-2010 Location: Lake Lotawana Status: Offline Points: 27 |
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Posted: December-09-2020 at 8:00pm |
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Part 351 Longblock RR with GT40 Heads 2 year warranty 3,200.00 Part Gasket Kit 45.00 Part Performer Intake Manifold 350.00 Part HEI High Performance Distributor 400.00 Part HEI Spark Plugs And Wires 180.00 Part Damper Plate 235.00 Part Holley 4160 600.00 Part Fuel Pump 135.00 Part 3/8 Fuel Line 50.00 Part Spin on F/F And Add In-line F/F 75.00 Part Exhaust Service Kit 135.00 Part list.
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Hollywood
Moderator Group 
Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13515 |
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Posted: December-09-2020 at 8:49pm |
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For $6k not many other options. It’s definitely the right parts list. You’ll love the performance afterwards.
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trn448s
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Joined: May-23-2010 Location: Lake Lotawana Status: Offline Points: 27 |
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Posted: December-10-2020 at 8:22am |
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Thank you. I'll post my reaction afterwards.
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Jonny Quest
Grand Poobah
Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2979 |
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Posted: December-10-2020 at 11:41am |
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If you can, go with the GT-40P heads vs standard GT-40. Slight boost in compression ratio and less prone to cracking.
JQ
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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