CMDi & OPS engines

[dwilfong]

I have now put three gallons of fuel through the OPS 45. Internally all is looking very good. Top of piston and head look new.  Virtually no metal erosion from detonation. Rod looks good. Bearings are still super smooth.

In stock form the OPS 45 has achieved 78 mph in a 67 SGX-2.  I have now modified the engine and just resumed testing with it. The engine is now accelerating to the same speeds quicker and will run faster with a bit of pipe and prop tuning.

Eric Canto and I have also been testing the OPS glow plugs on a variety of engines. Our first impressions are that we are very pleased with the performance of them. We have both conducted back to back tests with our normal favorite plugs in 4 different engines.  Considering that my assessment may be biased I think that they are at least as good. Eric on they other hand says they are better.  We have tested the OPS standard plugs in the Hot and Medium.  The Medium works equivalent to the MC#9 and K&B HP. The Hot plug burns the fuel better and seems to hold up as well as the MC#9 and K&B HP.  Yesterday I was running the Hot plug in the OPS 90 big block on 60% nitro.  The plug held up great while running a very clean mixture with big props and short pipes.

View attachment 99699

Andy that boat looks like you where hitting the Apogee.

 

[David Bryant]

very cool, thanks for the input. What pipe are you using on  the new OPS .45?

 

[Andy Brown]

very cool, thanks for the input. What pipe are you using on  the new OPS .45?

David

I have tried several different pipes on the OPS 45 and most work well, There is one that stands out above the rest, but it a Frankenstien made from several other pipe parts.

Soon my initial testing will be complete and I will report on what works best with the Stock and Modified OPS 45.

 

[brad nichols]

What is the price on the 45?

Brad

 

[Andy Brown]

What is the price on the 45?

Brad

$390.  The price includes a modification to correct a manufacture clearance issue in the drum drive slot.

 

[FloridaScaleBoater]

$390.  The price includes a modification to correct a manufacture clearance issue in the drum drive slot.

Are they in stock, or ordered in?

 

[Andy Brown]

Are they in stock, or ordered in?

The OPS 45 is in stock Rick.

 

[aaron alberico]

Andy you got any photos of the internals ?

and you keep spare parts in stock?

regards Aaron 

 

[DarrenWinn]

New to nitro motors have a ops .67 red head#666 was wondering if the water cool head play part number 397 would fit motor and the pinch head off of the ops.65 engine fit

 

[PaulHail]

Andy had posted some pictures of the 45 previously in the motors forum



Found this one on the net



Looks to be a comparison of old vs. new cylinders as the cylinder on the right is for a four bolt head.

 

[David Bryant]

stock

 

[Andy Brown]

New to nitro motors have a ops .67 red head#666 was wondering if the water cool head play part number 397 would fit motor and the pinch head off of the ops.65 engine fit

Darren,

I have not had my hands on the old OPS .65 but from photos I suspect the red 67 water jacket fits.

 

[KenOlvis]

Andy Any updates to report.
Thxs
Ken