Scarab 33 AVS with 502MAG's - New to me!
04-15-2020, 01:42 PM
#11
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Interested to read your thread. I am in Croatia and have a small collection of Scarabs An 18, 22 and 26. I am also looking for a 33 to buy but as you know they are hard to find in Europe. I only know of one at the moment which is in Belgium but is in a terrible state. I am interested to hear how you get on with your speed testing. If I remember correctly the Scarab in Belgium had 30P props. I think the 28P should be about right. I think when these were originally tested by Wellcraft they were hitting 78-80mph but with minimal fuel. 400 liters is quite a lot of weight. Do you have antifoul on the bottom as that will cost a few mph? Powerboat magazine did a test in the year 1999 or 2000 and with Volvo 560hp and duo props. Top speed they claimed was 92mph.
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larslindroth (09-23-2020)
04-16-2020, 02:52 PM
#12
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Interested to read your thread. I am in Croatia and have a small collection of Scarabs An 18, 22 and 26. I am also looking for a 33 to buy but as you know they are hard to find in Europe. I only know of one at the moment which is in Belgium but is in a terrible state. I am interested to hear how you get on with your speed testing. If I remember correctly the Scarab in Belgium had 30P props. I think the 28P should be about right. I think when these were originally tested by Wellcraft they were hitting 78-80mph but with minimal fuel. 400 liters is quite a lot of weight. Do you have antifoul on the bottom as that will cost a few mph? Powerboat magazine did a test in the year 1999 or 2000 and with Volvo 560hp and duo props. Top speed they claimed was 92mph.
currently i hit 76mph /5000rpm, with low fuel and 2 persons. Speed that is inline with the data announced back then by scarab for my set up (502’s, bravo 1, 26pts ). I am not talking for the powerboat test (it was with 500hp), but for data in the owners manual). With the 28pts, i almost touch 80. I prefer the 26pts.
i have antifoul paint, but i dont believe it made any difference.
(speeds before restauration was 63-65... i repaired/ replaced/ updated litteraly everything , and the thing is great)
Greetings from Greece.
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larslindroth (09-23-2020)
04-16-2020, 02:54 PM
#13
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09-15-2020, 10:41 AM
#14
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Summer period just ended , Scarab "wrote" 104hours of troublefree use. Mostly around 3000RPM, and occasionaly WOT.
Questions!
1. What oil to use? I had about 1lt oil consumption for every 10hours, but only after passing the first 30hours of use. Untill 30hours, everything was ok, and after that step , especially when on wot , i ve seen the consumption. I used Mercruiser oil, and i think they "broke" at about 30-40 hours. Oil temp &press are in normal range though.Reading the threats here, i cannot find the Mobil1 20-50 in Greece, so I am looking to Amsoil Dominator Oil.
2. What should be an normal oil consumption for the 502's mpi? (approx. 450hours) . Thinking of oil changes every 50hours.
3. At the end of season, i ve seen the (drivers side) engine oil pressure a bit dropped when cruising, with no other issues, and i presume is it just the oil that cannot hold. Am i right? (the mecchanic will check anyway next month).
4. I am thinking (just a thought for now) of putting Prochargers M1. Are they trouble free (in a healthy motor)? Or do i look for troubles ?
Thank you a lot!
Questions!
1. What oil to use? I had about 1lt oil consumption for every 10hours, but only after passing the first 30hours of use. Untill 30hours, everything was ok, and after that step , especially when on wot , i ve seen the consumption. I used Mercruiser oil, and i think they "broke" at about 30-40 hours. Oil temp &press are in normal range though.Reading the threats here, i cannot find the Mobil1 20-50 in Greece, so I am looking to Amsoil Dominator Oil.
2. What should be an normal oil consumption for the 502's mpi? (approx. 450hours) . Thinking of oil changes every 50hours.
3. At the end of season, i ve seen the (drivers side) engine oil pressure a bit dropped when cruising, with no other issues, and i presume is it just the oil that cannot hold. Am i right? (the mecchanic will check anyway next month).
4. I am thinking (just a thought for now) of putting Prochargers M1. Are they trouble free (in a healthy motor)? Or do i look for troubles ?
Thank you a lot!
Last edited by dr.spiderman; 09-15-2020 at 10:45 AM.
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larslindroth (09-19-2020)
10-03-2021, 03:06 PM
#15
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Summer season ended so back for winter time...We had a great time. Amsoil are far better than the oem oils. Boat performed as it should all time.
Last edited by dr.spiderman; 10-03-2021 at 03:17 PM.
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1983ScarabIII (03-12-2022), hblair (10-04-2021), hogie roll (10-04-2021), hoodoo (10-06-2021), larslindroth (10-04-2021)
The following 6 users liked this post by dr.spiderman:
1983ScarabIII (03-12-2022), hblair (10-04-2021), hogie roll (10-04-2021), hoodoo (10-06-2021), larslindroth (10-04-2021), Rookie (10-03-2021)
