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Hustler
08-03-2005, 08:58 AM
A buddy of mine bought ColeTr2's old boat and is droping a 392 Hemi in it. It will be about 500hp. The question is where do you think the motor should sit. Cole had his set up at 35"s from the transom, this motor will make less hp and will weigh more.
Hustler
08-03-2005, 12:10 PM
no ones has any thoughts on this?
Fiat48
08-03-2005, 12:19 PM
Most Coles I have seen are 32 to 35 inches. Why not start where it is now and see how the boat does. Every boat is different...even between same models.
EXTREMEBOATS
08-03-2005, 02:04 PM
:idea: DITO.... Why change unless you have to.
Mike
Norseman
08-03-2005, 02:08 PM
Mount the motor were it was before, if it doesn't handle right it's easy to step up the motor!! Just put a bigger blower on it!! :) :)
SUI-CY-COLE DIMARCO
08-03-2005, 03:49 PM
that hemi is probably 2-300 lbs heavier that the chevy that was in there...
Hustler
08-03-2005, 03:51 PM
that hemi is probably 2-300 lbs heavier that the chevy that was in there...
Thats our main concern and the fact that it will have about 300-400hp less than when Cole TR2 had it. What do you think about starting at 33 inches
SUI-CY-COLE DIMARCO
08-03-2005, 03:53 PM
Thats our main concern and the faft that it will have about 300-400hp less. What do you think about starting at 33 inches
dont drill any holes if you dont have too,,,but ya maybe move back a little,but try it first where it is..maybe you can make it up with the prop location....hemi's combustion chambers LOVE...nos.....
EXTREMEBOATS
08-03-2005, 04:12 PM
Just some thing to think about. I have a 392 makeing 1000hp on Nos and I run with the BBC all day long. If you want to ask any questions just call. You can check out my engine on Dragboatcity under parts. I think you'll enjoy it...Mike
Bt273
08-03-2005, 05:20 PM
Most Coles I have seen are 32 to 35 inches. Why not start where it is now and see how the boat does. Every boat is different...even between same models.
Ditto here, if its heavier,why move it back,wouldn't that make it work harder to get set? more weight on the prop?
Fiat48
08-03-2005, 06:08 PM
If the nose wants to stay over then move it back. If it carries the nose too high then move it forward. But prop shaft location and a lot things all go into how the boat holds itself. Since you got existing motor mount holes and an existing driveline...I'd start where it is.
GofastRacer
08-03-2005, 06:49 PM
Put the motor in where it was with the right gear and prop combo for the power you have and try it and go from there, you may be surprised of the outcome. If you do changes before you try it and it don't work, you won't know if the changes you made caused it not to work or not, then you'll really be pulling your hair out trying to figure what's wrong. Theories always look good on paper but don't always apply, been there done that!.. :wink:
bigkatboat
08-05-2005, 10:48 PM
The Hemi is longer and heavyer. If the V-drive is at 96", go 35" to the back end of the timing cover. If the V-drive is at 98", go 33". You can then 'trim' the propshaft as needed. Keep the gears and come off of the diameter, that way it will 'slip on the bottom', and 'fly on the top end'. You can do it!
Hustler
08-06-2005, 06:57 AM
The Hemi is longer and heavyer. If the V-drive is at 96", go 35" to the back end of the timing cover. If the V-drive is at 98", go 33". You can then 'trim' the propshaft as needed. Keep the gears and come off of the diameter, that way it will 'slip on the bottom', and 'fly on the top end'. You can do it!
Where do you messure to on the v-drive?
ColeTR2
08-06-2005, 06:13 PM
It's at 96" I think 34 ~ 35 post some pic when it's in :D
EXTREMEBOATS
08-06-2005, 07:24 PM
V-Drive is measured from the mid plate to the transom.
GofastRacer
08-06-2005, 08:36 PM
V-Drive is measured from the mid plate to the transom.
Mike, think about that for a second!.. :D :D :D