There is a 2007 Nor Tech 39' Vee in the classifieds that has 650 efi's. I've not ever seen a thread about these engines. There is a good chance that I will have a boat built this winter and was going to go with 600 sci's but would prefer an EFI's if they are available at the same or near the same HP.

Can anyone give me a comparison? Thanks!

I believe the 650 efi's were from Nortechs in house motor program. Probably 525 base engines puffed up a little.

They are Nortech's own motors. Mark (Where's Eileen) has 3 of them in his old NT 43V and after 180+ hours they have been bulletproof. They look huge compared to a 525.

He has built 3 boats with NT power and has never been let down by them. He had 625's, 650's and now in the new boat 1000's.

thomas I saw that boat at knoxville poker run they are non closed loop motors (500 efi like mine) and I think they were built in house. very hard to get more than 630 hp with out a long block and 572 cubi inch motor on a 500 efi set up. They were probably 630 and they rounded up. They are also not super charged

Gerald,

You were not suppose to see this post. I'm sneaking up on you!!!

Sorry but u just fell way behind look at what I am leaning towards. Looks like you will be sneaking up after all.


http://www.teamshogren.com/new-boats...lightning.html

you going to pull the triger on that one? Nice
Mark

Nortechs 650 efi's are a 540ci no blower engine , they are very mild and reliable engines

Give the guy who developed them a little more credit than that. Ron Potter developed the NorTech in-house engine program. He use to work at Innovation Marine as one of their 3 top engine builders. A lot of the same ideas and technologies he carried with him to NorTech.

BA

dont give credit where credit is not due, top 3 , ha ha