zr6 speed

[Whitetail15]

how fast does your 196 with zr6 motor go. are they much faster than the 330 or 343? not that it matters, just wondering.

[hourglass]

from my experience the zr's have a little more low end and come closed cooled, but other than that you can achieve the same results with a new prop. most dealers will tell you that not many people order the zr's. that said; if i ever got a new boat it would be with the upgraded engine. here's an example. my buddy ordered his boat new in 05. he asked about the zr and the dealer(who is now closed, but served for many years) said no you don't need it, knowing he wanted closed cooling which put some labor money in his pocket installing it on the 330. if you need c.c. then get it, but otherwise IMO it's not worth the extra money. 1500 give or take

[TRBenj]

from my experience the zr's have a little more low end and come closed cooled, but other than that you can achieve the same results with a new prop. most dealers will tell you that not many people order the zr's. that said; if i ever got a new boat it would be with the upgraded engine. here's an example. my buddy ordered his boat new in 05. he asked about the zr and the dealer(who is now closed, but served for many years) said no you don't need it, knowing he wanted closed cooling which put some labor money in his pocket installing it on the 330. if you need c.c. then get it, but otherwise IMO it's not worth the extra money. 1500 give or take

My experience has been the opposite. My experience has only been with the 196, so YMMV.

I have seen about a 3-5 mph difference between the Excal and 6.0L. Most of my experience is with the TSC2 (no hydrogate). The 330hp Excals will run 45-46, the 375hp ZR6 runs 49-50mph. The ZR-409 is worth a little more beyond that (Ive been 55.x in the 409hp CCF edition 196- but that hull as been tweaked), I think 51-53mph is typical with the bigger engine and gate in the up position. I would expect a 343 Excal 196 with the gate up to run in the 47-48mph range, but I havent confirmed this. In case youre curious, the 6.0L boats turn a slightly steeper prop (extra cup) about 400 more RPM than the Excal (4900-5000 vs. 5300-5400).

I have not lined them up to be sure, but I cannot feel a discernible difference in holeshot. The difference is all from 3500+ RPM. There is also no way that youre going to gain 3-4mph on an Excal powered boat by changing the prop. You would be luck to gain 1mph on top. If you like to barefoot and need the extra speed, that would make a good case for the 6.0L.

[j2nh]

50 with the 409 in my 196. 45 in our club 196 w/343. I drive both boats on a regular basis and can easily notice the difference between the two when driving.

If all you did was slalom ski the 343 would be more than enough. If you barefoot the 409 is the way to go. Adjusting speed at the top end with one or two footers is instantaneous. Similar hole shot but with a load the 409 is much stronger. Fuel economy is roughly the same between the two or maybe a slight nod to the 409.

[shag]

I think in the lighter ski boats, the 409 would make a bigger difference. In the SAN I don't think it is as noticeable. IMO, I would rather have regular sea water cooling - if used in freshwater. Are the closed cooling boats still running hotter temps? It just seems that we are always ingrained to know that excess heat is not good for an engine in the long run. This is probably just my old way of thinking. Just my .02

[maxpower220]

It just seems that we are always ingrained to know that excess heat is not good for an engine in the long run. This is probably just my old way of thinking. Just my .02

The warmer the engine, the better it is for emissions. Note that these blocks are the same ones in cars and trucks, which always run a pressurized higher temp with no long term negative effects.