MSS999

I have used the WT-338 carb from my Zenoah 38 for a bit of experimentation on another engine and need to purchase a new one for the Zenoah. I could purchase another WT-338. But there is also the WT805 as used on the MLD35 and there are some WT 542's for sale on the well known auction site at relatively low prices. These are all 13.5mm venturi twin needle carbs.

So my dilemma is about which of these to buy as apart from general dimensions, throat and venturi size etc. I don't know enough about Walbro carbs to be able to tell from the part numbers whether they will have similar running characteristics due to jet sizes, metering spring and so on.

Thanks in advance.

MSS.

karolh

Watching too.

Karol

pe reivers

13.5mm carbs Abstract from my database:
<meta content="text/html;charset=UTF-8" http-equiv="Content-Type"><title></title> <caption>compiled data</caption> <thead> </thead>

carb	dia	HP	set	use		run	remark	date
WT201 B	13.4	0	D20-WAT			0	MVVS43, DA50, for better fuel flow use: wt 465A, wt 76 I think, wt257
WT484	13.4	0				0
WT561	13.49	0	D20-WAT			2	mvvs35cc, main jet 1mm, K20-WAT
WT540	13.49	0				0	has acceleration pump!!!
WT170	13.49	0				0
WT338	13.5	0				0	zenoah 38
WT664	13.5	0				0	WT-664 has a wetter midrange, use WT918 instead
WT918	13.5	0				0	Solves many problems in 50cc engines (Jody valleyview)
WT610	13.5	0				0	main jet 1.2mm (obsolete carb)
	13.5	0				0
WT465A	13.5	0	D20-WAT	mvvs, DA		0	better fuel flow than WT201 (info Pat Roy)

</meta>

Antique

My Feedback: (4)

They will all work....

captinjohn

Antique & Pe.....both first class data from people that know this stuff. Thanks....I know it takes time for you guys to share data. Best Regards Capt,n

Whistling Death

Funny, this thread came along when I was about to experiment with a carb from a DLE 30 on my G38.
The WT-338 seems to be such a pain in the butt to tune so I figured I'd try one from a DLE 30.

captinjohn

Ok...it lookslike you said I will try a carb off my DLE30 on the G38....right?

Whistling Death

Yes, I had just gotten back from cutting the grass at the flying field and it was in the upper 90's, my brain was fried.

MSS999

Pe and Ralph,

Thank you for your really helpful responses and your wilingness to share the depth of information/experience. Fully support Captinjohn's comments. Much appreciated.

For anyone following this tread, according to another thread the WT 542 has an accelerator pump.

http://www.rcuniverse.com/forum/m_96..._1/key_/tm.htm

Regards,

Maninder.