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Search took 0.00 seconds. Search: Posts Made By: mmwjr

Forum: Engines

02-10-2018, 11:48 AM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

Your thinking is good except to increase rpm you...

Your thinking is good except to increase rpm you need to decrease pitch. One change in pitch give about 250 rpm so you need to decrease a lot of pitch. I.e. if the initial set up used a 19 inch pitch...

Forum: Engines

02-10-2018, 12:26 AM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

WOT is max RPM not speed. You would be surprised...

WOT is max RPM not speed. You would be surprised that prop changes are difficult to make up for improper gear ratio.

Just a fellow boater who likes to help where I can.

Gen 2 is a much better...

Forum: Engines

02-09-2018, 11:09 AM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

What is the gear ratio of you outdrive? May not...

What is the gear ratio of you outdrive? May not be matched for the 5.7. What is the WOT with the new setup?

Forum: Engines

02-03-2018, 08:33 PM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

Ok the preVortec is rated at 260 HP so no...

Ok the preVortec is rated at 260 HP so no worries. Being fresh water the exhaust, intake and t-stat housing should be in good shape.

Forum: Engines

02-02-2018, 08:54 PM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

Interesting, I have not seen one of those on my...

Interesting, I have not seen one of those on my boat.

Being a 1991 the engine is a preVortec and uses a mechanical fuel pump and 12 bolt intake manifold. Do you plan to stick with this or go with...

Forum: Engines

02-01-2018, 04:36 PM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

Typically the Max HP rating is for safe operation...

Typically the Max HP rating is for safe operation of the boats handling. The engine mounting stress comes more from torque than HP however engines with higher HP tend to have more torque but again it...

Forum: Engines

01-31-2018, 10:17 PM

Replies: 14

Engine for '91 2300 SCR

Views: 2,712

Posted By mmwjr

Welcome aboard. Do you still have the old...

Welcome aboard.

Do you still have the old engine? There will be a serial number cast on it which will tell you if it is a 5.0 or 5.7. I am assuming you have an Alpha 1 Gen 2 outdrive which is good...

Showing results 1 to 7 of 7

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