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  Jack Plate with 90 E-TEC

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Author Topic:   Jack Plate with 90 E-TEC
dyeomans posted 03-14-2004 05:50 PM ET (US)   Profile for dyeomans   Send Email to dyeomans  
Is a jack plate necessary? How much does it add to cost on new install/repower? I have a 1990 Montauk.
jimh posted 03-14-2004 10:57 PM ET (US)     Profile for jimh  Send Email to jimh     
A jack plate is not necessary. The cost of jack plates varies depending on the design, probably from $75 up to several thousand dollars.
ratherwhalering posted 03-15-2004 04:18 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Depends. The E-tec 90 does not have blind hole mounts, therefore if your current engine is mounted using the blind holes (ie. the lower bolts go through the transom and directly into the threaded holes in the bracket itself, requiring no nut on the lower engine mount) you will need a set back bracket, adapter, or jack plate to mount the engine, absent filling in the lower holes and re-drilling new lower holes.
Kelly posted 03-15-2004 05:15 PM ET (US)     Profile for Kelly  Send Email to Kelly     
My 1980 17' Montauk came with a 70 hp Johnson mounted using the blind holes on the motor bracket. I found a used 1994 85 hp Yamaha at a Whaler dealer that I thought would be a good match for the boat. Anyway, I sold the Johnson and was gong to have the Whaler dealer mount the Yamaha. I asked them if I should install a jack plate before I brought the boat to them and they said no. I was very disapointed when I picked up the boat and the lower holes were lag bolted. I wished I would have put a bracket on at the time to avoid the holes and lag bolts.

Kelly

dyeomans posted 03-17-2004 08:55 AM ET (US)     Profile for dyeomans  Send Email to dyeomans     
Current engine installed using blind holes for bottom bolts. It now fits like a glove in the garage. So if I read this right I will need to fill holes or use an adapter, as the E-tec does not have blind holes?
ratherwhalering posted 03-17-2004 02:49 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
Well there are three options:

Fill and drill
bracket/plate
Lower lag bolts

I love my new bracket, and would reccommend it highly.

ratherwhalering posted 03-17-2004 04:52 PM ET (US)     Profile for ratherwhalering  Send Email to ratherwhalering     
I would also highly recommend it.
Bigshot posted 03-24-2004 12:34 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Would not have a Montauk without a jackplate. manual ones run about $150-250.

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