engine opinions for a 21 Rigger.

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tmunn

Well-Known Member
Joined
Jun 12, 2006
Messages
1,560
Guys are the Nova rossi style engines with the rear exhaust and 180* headers better suited to 21 riggers or are the front exhaust motors like macs and cmb's just as good.

I have some experience with the cmb's in a sport 20 but they never seemed to like to go slow and even using a smaller prop than most others were able to spin,would not mill well.

Although my NR is in a rigger it seems to have good mill characteristics and spins up pretty well also and i do not seem to need small props.

Just debating to sell the cmb's and get another NR or keep them for experimenting in another 21 JAE.

I have uncut pipes and headers for both style of motors.
 
Not a lot of slow milling going on with a .21 Hydro !! If you don't hit the line strollin' you are done in most cases ..RPM is your ally and the Novas and Macs, although unavailable , and the new CMB VAC series seem to be the way to go . If you have a fast .21 Hydro ...it's screaming or it's nowhere to be found .. Just my opinion ...not sure i answered the question !! LOL . The new Novas have stirred my interest and they have always impressed me with their machine work .. buy both and go for it !
 
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They are made by Rossi you are correct John. Tom you can call me tomorrow when you get a chance and I can speak to you about them all day. I have one on my SST rigger and it's a rocket my friend and I'm just running a ABC H-5. It's a awesome engine easy to break in and it's a rocket in it's stock form. I have 3 of them and Im very impressed with the power they make ok.

JCR
 
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There are some very good 21 size engines on the market today. Most of us that have been around a while have run 21's such as the MACs where the pipe comes straight out the back We've also run the 21's that have a 180 degree exhaust header. We ran the OPS 21 with a side exhaust.

These engines can be very fast if set up properly and maintained properly. We've seen national and world championships won by different brands and different style engines.

When you buy an engine, buy from someone you trust and an engine that won't be changed every so often so that you have trouble getting parts. Unless you are an expert, buy an engine that does not need modifications to run hard.

What was great about the MAC engines is that as they were updated, the new parts fit the older engines. The supplier was concerned about taking care of the customer.

It isn't just model boats, but too often we find ourselves with an outdated item that we cannot maintain because the parts are no longer available.

Al Hobbs
 
The reason way most guys run the nova.21 and I bet mostly p5 because they have proven they can run! and there aforddble economical price of 215.00!! I sure dont have 400.00+ to plunk out for a AA or cmb motor. I could by a really good Gas motor for that price.
 
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well nessa you have to look at it this way .. What you can afford and your paying for an engine from people that have tons of experience like AL hobbs and Andy Brown and you know for sure withough a doubt that it will perform.

plus the parts work also on the Mac engines thats the beuty. im not going to buy an engine that maybe outdated in 2-4 years and then i cant find no parts at all..

its a preference i dont like CMB and Novarossi so i stick to Mac and AA egines because they are proven design and need no Mods out the box and they will haul azz. the only reason i have CMB 80 Hr's on my twin is Because the AA84 are not out yet..
 
ok and by the time you take a 5 port new and get it modded its gonna cost you also keep that in mind no mods needed with AA engines out the Box
 
ok and by the time you take a 5 port new and get it modded its gonna cost you also keep that in mind no mods needed with AA engines out the Box

Get a new NR 7 port and you will not have to mod the engine to get it going well. Right out of the box!
 
What about the toro nero? Im going to be doing a 21 jae here pretty soon and im kicking back and forth some ideas....
 
well nessa you have to look at it this way .. What you can afford and your paying for an engine from people that have tons of experience like AL hobbs and Andy Brown and you know for sure withough a doubt that it will perform.

plus the parts work also on the Mac engines thats the beuty. im not going to buy an engine that maybe outdated in 2-4 years and then i cant find no parts at all..

its a preference i dont like CMB and Novarossi so i stick to Mac and AA egines because they are proven design and need no Mods out the box and they will haul azz. the only reason i have CMB 80 Hr's on my twin is Because the AA84 are not out yet..
OK the AA are new and how do we know if they dont change like CMB does every two years?
 
you know why i know and can give you a 100% answere just for you nessa. Because i know the designer and the man making it all happen im very good friends with him his name is Al Hobbs ask him if you like.

he made this new AA engines and the good thing about it is that the parts are also able to be used on Mac engines ummm has novarossi done that NOPE..

Al Hobbs has the poeple in the hobbie on his mind when he made these engines unlike other engine brands that make a new model and stop making parts for the old ones..

JCR
 
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you know why i know and can give you a 100% answere just for you nessa. Because i know the designer and the man making it all happen im very good friends with him his name is Al Hobbs ask him if you like.

he made this new AA engines and the good thing about it is that the parts are also able to be used on Mac engines ummm has novarossi done that NOPE..

Al Hobbs has the poeple in the hobbie on his mind when he made these engines unlike other engine brands that make a new model and stop making parts for the old ones..

JCR
Well I'd tought nova and cbm did too. But if you got a ton of motors out there on the market and after a few years sales can go down. What to do? and quit making replacement parts for it. Make a different motors. I'm not saying he would,but money talks as aways.
 
I would rather not be the subject of an argument.

The whole reason behind the A/A engines is to give the boater a choice. Without a choice, a single manufacturer can produce the engines he wants to produce, not what the customer wants.

Please take note that none of the USA engine importers have said anthing on this subject. I've known Glenn for several years and I just met Stu this past summer. I will try to be as much of a gentleman as they are.

Some people prefer the CMB. Some people prefer the NovaRossi. And some people are starting to like the A/A. I am happy to leave it at that.

Al Hobbs
 
I would rather not be the subject of an argument.

The whole reason behind the A/A engines is to give the boater a choice. Without a choice, a single manufacturer can produce the engines he wants to produce, not what the customer wants.

Please take note that none of the USA engine importers have said anthing on this subject. I've known Glenn for several years and I just met Stu this past summer. I will try to be as much of a gentleman as they are.

Some people prefer the CMB. Some people prefer the NovaRossi. And some people are starting to like the A/A. I am happy to leave it at that.

Al Hobbs
I'm not disagreeing with anyone. I have No particular favorite engine. I run what I can aford to buy. Now Mac went bye bye and so did picco for awhile. Now there back. Heres an Idea I wish they would do like the big three are doing. If you quit making a certian engine. Then you should make replacements parts for 10 years for them. Thats gives time to other guys to buy new upto date engines. I have a 2002 CMB.21 RS. I'd tought I can still buy parts for it like P&S, but not. Had Stu look at it and said that a old model and the new P&S wont work in it. To me thats sucks!
 
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