Will 650 fit revere 600?

[tbird96]

Hi, I have just bought a Honda ntv 600 revere it needs a new engine as the old ones beyond economic repair, a local breakers has a good 650 engine for £100 but I need to know if it will fit without changing anything?

I understand it may not run on the 600s carbs as it's a slighly bigger displacment!

[vtwinfan]

Hi, I have helped a friend swap a 650 to a 600 engine and that fitted straight in, and yes you are right , you need the right carbs as the rubber manifold and head inlet are a different size.

[tbird96]

Are the exhausts and wiring plug and play as well?

[McF]

There is very little physical difference between the 600 and 650 engines, so the 650 will go straight into the frame.

To contradict vtwinfan slightly, I think the only difference in the carbs is the jet sizes. It's a while ago now, but I don't recall a problem swapping a 600 with a 650.

Exhausts, cooling, wiring etc will all still fit.

If the 650 engine is in running condition, at £100 it's worth buying and then worrying later about any repairs to your 600 engine - snap his hands off ;D

[vtwinfan]

OK , the engine will drop straight in exhaust radiator and electrics are the same but the 650 has 36.5mm carbs and the 600 has 34.mm carbs so you need the correct carbs and rubbers they are not interchangable

[rj2para (Bisto)]

I guess the other angle is in Europe the Revere was sold as a 650.

Sounds like a cheap upgrade tbird. I dont think in reality your get much more power but a custom paint job "650 inside" could be good for a laugh. Ok I need to get out more (If only via an image mod on the pc )

[McF]

I stand infected corrected, many thanks VTwin

My memory is clearly not as good as I thought it was.

[tbird96]

Thanks for all your helpful responses!
I have bought it and there are a few diffrences but
nothing to stop the plan going ahead!
The 650 has water drian bolt and like it was said does
have diffrent carbs but other than both engines are identical

I should have it running fingers crossed by Friday!

And then it's mot and tax time :-)

[McF]

You might notice a small chromed pipe on the right side of the 600 engine leading from the front of the clutch crankcase cover up to the cylinder heads and between them.

This pipe is not present on the 650, but do not worry about it. It's an oil feed to the cylinder heads and is provided by internal oilways on the later engines.

If you read this before getting stuck in to the job. Getting the old engine out is pretty straightforward, but a handy tip for installation of the new one is as follows:

After you have the old engine out, remove the back wheel, then the final drive from the swinging arm
extract the shaft with spring etc and the universal joint
Fit the new engine and get the bolts aligned etc then tightened up, keep an eye on the rubber joint cover over the final drive, this needs to be aligned correctly over the engine final drive output and the swinging arm
Feed the universal joint back into the swinging arm on the shaft (apply the grease to the splines first!)
It takes a smal amount of fiddling around, but you will get the UJ onto the drive output shaft, then refit the final drive followed by the wheel.

I have spent hours trying to align the engine in the frame and with the drive shaft. Many grazed knuckles, much profanities and worn patience then tried the method above - It's an extra job to do, but a lot better when you're trying to move 80Kg of engine around.

Good luck with the installation and the MOT.

[tbird96]

Wow just in time, thanks I'm installing the new engine today so I will do exactly that!
I did notice these engines are heavy weights

Did you find the generator pick up wires a pain to pull through the frame?
I had to remove the whole rear mudguard and coolant bootle to get it free, probaly spent longer on that than everything else so far!

Is the uj only supposed to go one way round upon installation or is it not realy relivent it fits in the output spline both ways and there arnt any direction markings on it?

[McF]

Sept 27, 2010 7:56:02 GMT 1 tbird96 said:

Wow just in time, thanks I'm installing the new engine today

Great stuff - good luck!
(try and get some photos while you do it )

Sept 27, 2010 7:56:02 GMT 1 tbird96 said:

Did you find the generator pick up wires a pain to pull through the frame?

I don't recall a problem with this

Sept 27, 2010 7:56:02 GMT 1 tbird96 said:

Is the uj only supposed to go one way round upon installation or is it not realy relivent it fits in the output spline both ways and there arnt any direction markings on it?

It's best to try and keep it all the same way around, but I doubt it is essential.
Just make sure you clean it up and put some fresh Molybdenum Disulphide grease on the splines at both ends

[tbird96]

Well almost done!,
first engine we got from breakers was as
good as a paper wieght, crank was bent
so had the waterpump off it and took it back

next we found 2 in crediton, one looked alright
it was clean and turned over well but had no compression
on rear cylinder, so was left with one engine which
looked like it had been sat in the titanic since it sank!

but believe it or not actualy ran, it had compression when turned
it over, so we went ahead and fitted it, about 3-4 hours later
after, scrapped knuckles and the like,
it was the moment of and with the help of some petrol down the plug
holes the two you can actualy get to with out taking everything
off again, fired up and ran, it ran for a good 20 mins and revved to
7000 8000 rpm so I think it just might be the one!!!!

Still not out of the woods yet it may need taking out again as the exhaust studs
are not in very good condition ie some are missing!

So just the exhaust to do and fork seals for mot!

So I now have 2 engines and a working ntv600 ;D


Oh yeah its back to being a 600 as the 650 engine wad the one
with the bent crank

[McF]

That sounds like a painful experience, but at least you're getting plenty of practice!

Did you use the McF technique for engine in?