20" motor on an Allison SS-2000

[MODVP22]

Anyone ever run a 20" motor on an Allison Super Sport? Just curious because I've only really seen 15" mids on them. Thanks

[DAVEBB]

Hi Tom When I bought my SS from Baker we discussed in lenth 20` motors versus 15` motors. Because I had a 20` motor on the shelf I didn`t want to spend the extra money to switch to a 15`. Allison origanally designed all of his boats around small horse motors that were long shaft. If you go into the archives Sam has dicussed this many times. I don`t know how you look it up but it is there. The bottom line is he really couldn`t find much difference. Hope this helps you. Later Dave

[Scott Gilmore]

Yes, when I first bought my SS2000 back in 98 , I ran a 20" 225 Pro Max, rigged by Baker. I ran it for 1 summer (about 250hrs) & it was a good setup. So, yes no problem running a 20'/SS2000 combo ! Scott

[MODVP22]

Hey thanks guys for the info. I kinda remember something about Sam posting a thread discussing a 20 and 15. Looks like I won't have any problem with a 20" offshore. Now I just got to find a 10" jackplate. Thanks again.:)

[skydog]

8" set back you mean?:D

[MODVP22]

Skydog,
The previous owner told me to run a 10" because he had some reliable sources from AllisonOwners.com tellh im to use an 8" or 10", and he had a 10, so I figured I'd jsut go with what he used.

Dave, Scott,
do either of you have any pics of your old SS-2000 with 20" motas on them? Just curious.

PS. Dave, you got that Rocket ready yet?

[Scott Gilmore]

Sorry, no up close pics.......+ no scanner. 6.5in CMC power jack/ 3in spacer. Scott

[skydog]

It will fly flater and easier with 8" of set back!. You can all ways add 2" later if you want to try! I know it is not close to a Allison G.S. but when i bought my boat it had 10" went to 12" Bad move i could not drive the boat over 90 very easy at all boat was way to lose. Now i have 8" and i know it will be right on!! I dont think a SS 2000 needs more than my Grand Sport for lift. Set back is way over rated on Allisons! I know Sam Baker had a very very fast SS he was running 8". I think people get them mixed up with Hydrostreams?

Skydog

[Scott Gilmore]

AKA wimpy beer drinker ? SS2000 , when I took my boat to Randy I traded my 20" Pro Max for a 2.5 SS & he set it up for me (VERY happy I might add), he took off the spacer & went with only the 6.5 CMC BUT that was with the SS . It ran/handled great with the prior 9.5 setback. Tell Randy I said hey. Scott

[David]

There 20 SS2000's on the Allisonowners.com web site. 10" of setback is the most popular choice. Before I bought mine there were eight with 10" setback, three with 8". Mine has been switched from 10 to 8 but hasn't been wet yet with the new set up.

Minimum = 5.5, max = 15.

Not very many SS motors either, only 5.

I don't see much correlation between HP and speed in these boats. Maybe the HP shows up in acceleration:)

David
SS2000, XR4
lake is still frozen