OEM Dolmar 7900 Kits?

[fordf150]

That is a heckuva competitive price.

Dolmar has always been ahead of the pack on parts pricing, from what I am able to gather.

http://performanceoutdoorequipment.com/products/cylinder-and-piston-kit-ps-7900-038130910 with discount just a hair over $200 for an oem kit. thats hard to beat

 

[fordf150]

the 7900 kit includes the 7910 P&C, black top cover, decomp

 

[shorthunter]

Sure does but the 7900 muffler doesn't match up worth a sh*t

 

[fordf150]

Sure does but the 7900 muffler doesn't match up worth a sh*t

give me a bit and i will take some pics of 7910 cylinder and 7900 muffler/ gasket

 

[shorthunter]

I have one here. They aren't even close

 

[computeruser]

How much of the reduced stated HP on the 7910 compared to 7900 comes from the wacky muffler?

 

[Adirondackstihl]

There are pics on the first page if you'd take time to look.......

 

[fordf150]

There are pics on the first page if you'd take time to look.......

i dont comment on a thread unless i have read the whole thing. yes there are pics of the cylinders but i didnt see pics of how the 7900 muffler matches up

 

[Adirondackstihl]

I just thought it would be pretty evident by looking at the muffler itself? No?

 

[Mastermind]

I have some nice aftermarket 7900 kits....

Are they standard bore or BB?

 

[slovcan]

If the 7900 muffler inlet is the same size on all sides as the 7900 cylinder outlet, then it looks to me like there would be no restriction when mounted on the 7910 cylinder. The bottom of the port seems to be at the same level on both while the top looks quite a bit higher on the 7900. The 7910 port really looks like it wants to be enlarged.

I wonder why they made that difference. Looks like they were making an effort to de-tune the 7910.

Cheers,
Glenn

 

[Duke Thieroff]

Are they standard bore or BB?

I have both Homie.

http://sawsalvage.com/collections/all-pistons-cylinders/dolmar-makita-7900-7901
Black ones are BB, plain metal are standard.

 

[shorthunter]

Who Everything else is the same

If the 7900 muffler inlet is the same size on all sides as the 7900 cylinder outlet, then it looks to me like there would be no restriction when mounted on the 7910 cylinder. The bottom of the port seems to be at the same level on both while the top looks quite a bit higher on the 7900. The 7910 port really looks like it wants to be enlarged.

I wonder why they made that difference. Looks like they were making an effort to de-tune the 7910.

Cheers,
Glenn

I think you are confused. The 7910 exhaust port is actually bigger where the muffler bolts up. If you port match a 7900 muffler and gasket to a 7910 cylinder, you will have no gasket left up top.

Unless of course you use epoxy for filler on the roof and floor of the exhaust port

 

[Mastermind]

I just make a gasket from Mr. Gasket material.

 

[watsonr]

Mako is making a 52mm kit and the other kit I carry is a BB kit at 54mm. Both fit the 7900 and are not the 7910 conversion kits.

 

[Duke Thieroff]

I just make a gasket from Mr. Gasket material.

Da heck do you know about gaskets?


Or chainsaws, period for that matter?

 

[Mastermind]

Da heck do you know about gaskets?


Or chainsaws, period for that matter?

I like turtles.

 

[Duke Thieroff]

I like turtles.

 

[Mastermind]

So phuckin Hawt.

 

[slovcan]

Who Everything else is the same


I think you are confused. The 7910 exhaust port is actually bigger where the muffler bolts up. If you port match a 7900 muffler and gasket to a 7910 cylinder, you will have no gasket left up top.

Unless of course you use epoxy for filler on the roof and floor of the exhaust port

I think I must be confused. I thought the 7900 was on the left. Looks to me like the left one has a bigger exhaust port. I didn't look closely at the muffler before. Now I don't see how that would mount to the cylinder on the right (7910?). I take it the 7910 muffler does not have that protrusion that inserts into the exhaust port?

Dazed and confused,
Glenn