After getting my hands on the hard to get Manifolds and reeds, I am now thinking of
1) which carbs to use( stick I believe are 34mm) for a good low end
.2) should I use a single wire throttle body like the KZ1000 connected to all 4 carbs or try finding a 4 wire stock throttle. Thanks.
Best and easiest to get solution is a dual cable throttle and then two splitters. TZ750 throttles are out there, but rare. KZ1000 is a horse of a different color and not at all applicable; One cable, activating a pulley connected to a shaft that works 4 carbs that are bolted together in one solid bank.
agreed.
or get a custom cable setup made.
Quote from: DesmoDrew on November 29, 2021, 10:46:23 AM
Best and easiest to get solution is a dual cable throttle and then two splitters. TZ750 throttles are out there, but rare. KZ1000 is a horse of a different color and not at all applicable; One cable, activating a pulley connected to a shaft that works 4 carbs that are bolted together in one solid bank.
Thanks.splitters? What are they......a website link perhaps....
https://www.leadingedgeairfoils.com/3-4-way-splitter.html
Thanks.and about the carbs? Any upgrades? Would it be better to move to small carb like a 30 or even 28 to get better low end.....
On a 750. No need to go smaller. They are quite tame with 34s on. My drag motor with a 750 top end is similar to an RZ motor but with a bit less mid range. Easy to ride.
You could go bigger though.
Wouldn't a single cable and pulley system provide better synchronization to the carbs?
not necessarily. that being said, you would then need to build a rail and linkage arms and fabricate adjusters . huge pain in the ass. and then you would always have to pull all 4 carbs at one time.
I'd be on the horn to Motion Pro or Terrycable (are they still around?), tell 'em what you're doing and I think they'd be happy to make you what you need
Quote from: m in sc on November 30, 2021, 03:07:48 PM
not necessarily. that being said, you would then need to build a rail and linkage arms and fabricate adjusters . huge pain in the ass. and then you would always have to pull all 4 carbs at one time.
I believe there are carbs which come with pre-made linkages, like the Mikuni RS series?
all i can say is: good luck. seems like an awful lot of bother. i've synched plenty or triples which run 4 cables, not hard. takes like 15 mins.
Quote from: m in sc on November 30, 2021, 03:07:48 PM
not necessarily. that being said, you would then need to build a rail and linkage arms and fabricate adjusters . huge pain in the ass. and then you would always have to pull all 4 carbs at one time.
Exactly.
Even with only 2 or 3 carbs, it is much easier to do carb work when you can just pull one at a time.....pull the one that is pouring fuel out...or not letting any fuel in...or....
Yamaha had a 750 or 800 4 cyl 2 stroke snowmobile some 20-30 years ago. V-Max 4 i believe it was. Maybe some throttle cable items from that sled can be used.
Also, Venhill in the UK make cables to customer spec, as well as selling individual components.
Quote from: Dvsrd on November 30, 2021, 05:57:30 PM
Yamaha had a 750 or 800 4 cyl 2 stroke snowmobile some 20-30 years ago. V-Max 4 i believe it was. Maybe some throttle cable items from that sled can be used.
Also, Venhill in the UK make cables to customer spec, as well as selling individual components.
Vmax 4 did this:
https://youtu.be/HXLZ7ell-qs?t=600
Sweeeeeeeetttt
Quote from: DesmoDrew on November 29, 2021, 10:46:23 AM
Best and easiest to get solution is a dual cable throttle and then two splitters. TZ750 throttles are out there, but rare. KZ1000 is a horse of a different color and not at all applicable; One cable, activating a pulley connected to a shaft that works 4 carbs that are bolted together in one solid bank.
I'd do this.
When searching for V-Max 4 pictures, it appears it has linked carbs. And also looks very similar to the TZ750 in its arcitechture, with a 65 mm bore and 59.6 mm stroke. And it is rated just over 150 hp......So a carb bank from a V-Max 4 could be a better option than any other linked carb setup.
It may be worth investigating further at least......
Early 69-70 cb 750 throttle cable. 1 inta 4 split...