Hyway branded Dolmar 7900 kits are here, Upgrade that 6401 now!

[watsonr]

The Dolmar 7900 Hyway kits are in! 54mm bore, Nikasil plated, high quality and warranted for 90 days!

These fit the 6400/6401/6421/7900 Dolmar/Makita saws and are a great power upgrade.
Kit includes cylinder, piston, Caber rings, pin, and clips.

I'm offering them to you for $85 just like the others until Sunday at midnight!

Don't wait, Regular price is $109..... at 12:01am Monday this offer is GONE!!!.

 

[WKEND LUMBERJAK]

The Dolmar 7900 Hyway kits are in! 54mm bore, Nikasil plated, high quality and warranted for 90 days!

These fit the 6400/6401/6421/7900 Dolmar/Makita saws and are a great power upgrade.
Kit includes cylinder, piston, Caber rings, pin, and clips.

I'm offering them to you for $85 just like the others until Sunday at midnight!

Don't wait, Regular price is $109..... at 12:01am Monday this offer is GONE!!!.

how do you want these ordered do we send you a pm or what?

 

[watsonr]

how do you want these ordered do we send you a pm or what?

Glad you asked about these... my supplier was dragging his feet!

Yes Sir, send me a PM with PayPal address and I'll send an invoice.

 

[fastLeo151]

How do these compare power wise to a stock 7900? Also what does it take the displacement to?

 

[watsonr]

How do these compare power wise to a stock 7900? Also what does it take the displacement to?

I think there 84cc... somebody else may be able to figure that out... I'm not a smart as some of you is.... but for the price and the quality of the Hyway kits... you WONT find a better deal ANYWHERE or the warranty to go with it!

 

[fastLeo151]

I'm more concerned about quality and power output than price.

 

[deereguy]

PM sent, deereguy

 

[Lignator]

got any pictures?

how are they different than the NWP BB kits?

Thanks!

 

[MCW]

Can you put some photos of these kits up Randy?
Interesting to see which ones they are. Most of the Makita/Dolmar BB kits are certainly functional and reliable but have pretty poor squish and compression. I've got 4 here that I'm actually not going to sell unless I get some machining done on.

 

[Lignator]

Can you put some photos of these kits up Randy?
Interesting to see which ones they are. Most of the Makita/Dolmar BB kits are certainly functional and reliable but have pretty poor squish and compression. I've got 4 here that I'm actually not going to sell unless I get some machining done on.

well put!

I am running 2 of them, squish is .032 w/o base gasket! Still strong runners though.

 

[MCW]

How do these compare power wise to a stock 7900? Also what does it take the displacement to?

They take it out if I remember correctly to around 85cc. Power and performance will vary depending on who is making the kits. Some of the later kits I had would not perform anywhere near a Mahle 79cc kit but the earliest batch I got in would probably beat a Mahle kit - the difference in quality between the various manufacturers of the Makita/Dolmar kits is chalk and cheese. If you are going from a 6400/6401 then any of the BB kits will provide a significant improvement in power.
Owning two 7900's and having a 6401 I have tested a lot of these kits extensively. No failures, just major differences in squish and compression and therefore performance.

 

[FATGUY]

Can you put some photos of these kits up Randy?
Interesting to see which ones they are. Most of the Makita/Dolmar BB kits are certainly functional and reliable but have pretty poor squish and compression. I've got 4 here that I'm actually not going to sell unless I get some machining done on.

Hand deliver them to Cincinnati, there'll be cold beer, a fat machinist and friends waiting for you.

 

[MCW]

well put!

I am running 2 of them, squish is .032 w/o base gasket! Still strong runners though.

I've seen them out to .045" and 145psi.
The earlier kits I had which I can't seem to source anymore had squish around .020" - .022" (without a base gasket) and 170psi compression. A number of Aussies are running them plus I sent a few for testing to guys in the US and Canada. Next batch I imported were completely different kits and the quality dropped significantly. Andyshine and Will Parris have these earlier kits. I think Will has sold his Makita since and it's still going strong. I don't have anywhere near the same confidence in the later kits I've seen. The good ones have to be out there somewhere though except I can't seem to find them anymore

 

[MCW]

Hand deliver them to Cincinnati, there'll be cold beer, a fat machinist and friends waiting for you.

Beer you say??? I'll get there one day Nik, promise!