Matching a Yanmar to a Volvo outrdive-gctid366664

[Guest]

If it were ever possible can a Yanmar 6LY be hooked up to a VP 290 DP-A

No known adapter plate I have found. Will a Flex plate needed to be fabricated in VP splines

Because the Yanmar is heavier I personally would like the engine set closer to midships with half shalfs

Is this possible or just a pipe dream

Len

[Guest]

Canuck wrote:
If it were ever possible can a Yanmar 6LY be hooked up to a VP 290 DP-A

No known adapter plate I have found. Will a Flex plate needed to be fabricated in VP splines

Because the Yanmar is heavier I personally would like the engine set closer to midships with half shalfs

Is this possible or just a pipe dream

Len

I have no idea, but I guess the first question is why? What the advantage be to using that particular engine?

[2850Bounty]

Canuck wrote:
If it were ever possible can a Yanmar 6LY be hooked up to a VP 290 DP-A

No known adapter plate I have found. Will a Flex plate needed to be fabricated in VP splines

Because the Yanmar is heavier I personally would like the engine set closer to midships with half shalfs

Is this possible or just a pipe dream

Len

Len, the AQ series drives are Borg Warner capable. Borg Warner is Borg Warner all day long, and is an industry standard name.

The Yanmar 6LY flywheel cover would need to be Borg Warner also.

Our member Wayne Miller used this system to get his OMC 460 to a Volvo Penta DP-C1 drive several years ago.

It was relatively simple, and nothing was butchered up or make-shift.

You would not be able to use this Yanmar flywheel cover.

http://www.marathondiesel.com/site/components/com_virtuemart/shop_image/product/6LY__Flywheel_Ho_4c5aafff76cbf.jpg

You'd need to ask your Yanmar dealer for a Borg Warner F/C, or locate a good used one.

The 6 bolt Borg Warner pattern will look like this:

http://www.simplicity-marine.com/images/6lpa.gif

You'll need the Heavy Duty B/W drive coupler as well.



Once you get to B/W, then you'll need a B/W -slash- Volvo Penta PDS adapter housing that will take you to the Volvo Penta AQ series transom shield.

You will need SEQ #3 and the PDS and bearings/seals. ..... you can omit the other items and use the above drive coupler, or similar.

http://www.volvopentastore.com/mall/image/view/7/6/23064_0.png

Basically, you will be replacing this gasoline engine arrangement.................



....... with this (example only).



One catch..... the B/W --- Volvo Penta adapter housing is from late 70's/early 80's and were typically course spline at the AFT end (female yoke end).

The fine spline PDS can be used in this housing.

With this much torque and horse power, I'd suggest going to an "A" transmission....... as in 290A, SP-A, DP-A etc, and most definitely having new main drive gear bearings installed.

.

[2850Bounty]

There may be a second method using the larger 10 bolt pattern flywheel cover and PDS adapter housing.

This would also be Volvo Penta OEM.

[Guest]

2850Bounty wrote:


With this much torque and horse power, I'd suggest going to an "A" transmission....... as in 290A, SP-A, DP-A etc, and most definitely having new main drive gear bearings installed.

.

I will use the VP 290-A DP

But some disagree that the VP outdrive will not handle the HP & Torque of the Yanmar, and my answer is they match a Yanmar to a bravo & IMO Volvo is more reliable...........wouldn't you agree

Am I better off with Yanmar's outdrive the ZT350..........or is it too new & unproven?

Thank you again Rick in your informative advice

Len

[2850Bounty]

Len, ultimately you'd use the DP-E drive with this engine, and very likely the 1.78:1 ratio.

.

[captharv]

Try: Mastry Marine in St. Peterburg, florida . They are the yanmar experts. They mate yanmar engines to outdrives there, and would have all the parts.

Incidentally, they prefer the Bravo II as being the most rugged and its larger diameter prop helps a lot.

https://www.mastry.com/