HOnda Steed Engine specs/ Bros SPecs

[mrsquirrel]

Do the Honda Steed 400cc and 600cc have the same stroke?

I want to carry out a simple cyclinder swap if possible to fit into my VRX,

I believe the Honda Bros/Hawl 650 has the same engine as the Steed 600 which in theory means that I could put it into my VRX as long as the strokes are the same.

Anybody got any ideas if this can be done>
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[hmmmnz]

the bore and stroke from the 400 is
64.0 x 62.0 mm (2.5 x 2.4 inches)
and the 600 is
75.0 x 66.0
so no not the same, you might be able to shave a mm or 2 from both sides of the head, ect ect to try and increase your compression slightly

the sv650 has a closer stroke lenth of
81.0 x 62.6 mm (3.2 x 2.5 inches)
dunno how much luck you would have trying to bolt the head of the sv on your you block.
you would probly find a engine transplant would be easier and probly a whole heap cheaper
____________________
the humans are dead
I kick arse for the lord
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[Paddy Blake]

It is not a bros engine thats for sure.But a transalp 600 engine might be
close.

Paddy.

[hmmmnz]

hmmm the mighty trans alp
just had a look and it looks like the bore and stroke is the same as the 600 steed at 75.0 x 66.0
go figure what other honda v twins are there ???
mabee an old cx500??
thats 78.0 x 52.0 mm
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[mrsquirrel]

This is what I have so far

The Honda Bros and Steed 400cc share the same engine but the Bros has a close ratio gear box.

The Steed 600cc and 400cc share the same frame,

It appears that the Bros 650 and the Steed 600 share the same engine but the Bros has a bigger bore.

So if all this is true then I should be able to dump a Bros 650 engine into my bike (Honda VRX)which uses a steed 400 engine since that engine can be swapped out with a 600cc steeds. which should mean that a 650 will fit.

Is that making sense?

I didn't know about the translap which has given me another option.

Any idea if the clutch basket from the 400 Steeds were common in any other bikes?
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[Paddy Blake]

The front exhaust on a bros would hit the frame but i think the transalp
600 exhaust is the same angle as yours.
If your changing cylinders you will need to be sure whether the oil goes
to the heads by an external pipe or internally.
The other thing to check before you try to change the engine is how far
the shaft the sprocket goes on sticks out as there can be a difference of
5 to 10mm.


Paddy.

[hmmmnz]

have you read this??
https://www.nibiker.co.uk/reviews/bikes/bros/
the trans alp is 53hp and the nt650 engine is 57
but still a step up from the 400
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[sickpup]

Right do you mean the VLX/VT600 Shadow steed thing?

If so. The BROS engine is NOT the same. In many many ways it is different including making about double the power of the steed/shadow and having a 5 speed box over the steed/shadow 4 speed.

If you are trying to put a BROS engine into the custom frame you are going to run into a few problem I believe but I'm about to go to bed so will continue this later.

Heres a place you can buy a brand new complete engine that should fit quite nicely clicky.

Sadly I know these bikes to well.

[mrsquirrel]

https://www.wemoto.com/wem/pic/vrx94.jpg

I'm talking about one of these VRX 400cc, this runs a Steed engine.

It really wants a 650 though.

https://www.ridetowork.org/files/master/everydayrides/189.jpg
However if it can't be done without breaking the bank and my heart then it can't be done.
____________________
Keep your nuts safe and clean!!

[sickpup]

The 650 top end from the BROS will not fit that engine but the 650 top end from an NTV might. The BROS has external oil lines for the front cylinder whereas the VT/VLX/VRX doesn't.

The easiest way to do it and the only way to retain the look is to get a complete lump from a VT/VLX.

[mrsquirrel]

That was my plan to do a whole transplant

Sorry I probably hadn't made that clear (I did change my mind part way through after realising that the stroke was different, I forgot to tell anybody)

I went from the idea of cylinders to a whole engine

So do you think that the 650 engine will fit in without too many problems then.

It appears to be exactly the same engine having researched the history but I'm not 100% sure.
____________________
Keep your nuts safe and clean!!

[sickpup]

Yes the engines are from the same family but they are different.

Will it fit easily, don't know but I doubt it. Is £400 a bargain for a new engine that has a greater chance of fitting, yes.

[mrsquirrel]

I live in Thailand so that is out the question
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[sickpup]

Oh well. Guess you're gonna have to look for a 600 locally then.

[mrsquirrel]

Current plan is to buy a whole 650 and cannabalise it.

I can pick one up for around 400-600 pounds depending on it's condition and if it's registered.

The good side being that I can sell the bike again if nothing fits.

The downside being I will end up with a Honda Hawk/Bros with a 400cc steed engine fitted to it as well.
____________________
Keep your nuts safe and clean!!

[sickpup]

Notice the way I keep saying 600 and not 650, theres a reason.

[mrsquirrel]

Very good

What would that reason be then?
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[sickpup]

Except for the transalp it would fit with the minimum of hassle.

[mrsquirrel]

Aah gotcha.

I thought you were being obtuse.

Hassle wise shouldn't be too much of a problem (well not for me). I will be taking my mechanic to take a look at the 650 with the VRX side by side, manuals printed out and his head working hopefully he will either say yes or no rather than a maybe.

He has made steed 400 years ago with an early Bros 400 engine which he claims was no hassle.

The main concern that he has from looking at the photos is that the exhaust outlet on the front cylinder may be in line with my frame. If I am lucky it is going to come out in the middle of the radiator and I will just have to move the radiator instead or split it in to two separate coolers.

A 600 engine out here is extortionate a 600 steed is too much as well.

If it all goes to shite I have a backup plan.

A '76 GL 1000 just waiting to be bought.
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[Clanger]

I was always told the Africa Twin engine would easily fit into the Honda Bros frame... not that I ever did it mind, I just went out and bought a faster V-twin bike!
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[mrsquirrel]

Oh


And why would the Translap cause hassle if the others don't?
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[sickpup]

[mrsquirrel]

So does that mean my original plan is still on then (within reason)?
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Keep your nuts safe and clean!!

[sickpup]

No the BROS 650 is a 650 not a 600. The ideal engine is a VT/VLX.

[sickpup]