KEIHIN 27mm would i notice a diffrence on my blaster

[blaster man1]

hi all i have a
KEIHIN carb that i got from a freind and my carb off my blaster is f****d will i notice a diffrence with only 1mm diffrence in size

 

[Blaaster]

Hardly any difference, you may gain just a little top end and loose the same bottom end.

Whatever you do select the correct jets for your modifications and do a plug chop to confirm jetting!

I may be barking up the wrong tree, but I cannot recall any 2 strokes that use the 27mm carb.

I am aware of 110cc 4 strokes, and Honda XL 185's using them, but never any 2 strokes.

Someone please correct me if I an wrong!

If I am correct, they are exclusively designed for 4 stroke operation and would be unsuitable for a Blaster!

 

[blaster man1]

Hardly any difference, you may gain just a little top end and loose the same bottom end.

Whatever you do select the correct jets for your modifications and do a plug chop to confirm jetting!

I may be barking up the wrong tree, but I cannot recall any 2 strokes that use the 27mm carb.

I am aware of 110cc 4 strokes, and Honda XL 185's using them, but never any 2 strokes.

Someone please correct me if I an wrong!

If I am correct, they are exclusively designed for 4 stroke operation and would be unsuitable for a Blaster!

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Have one to sell? Sell it yourself
Details about KEIHIN 27mm racing carburettor performance carb YAMAHA JOG 50 HONDA DIO 50 2T
got this of ebay

 

[Blaaster]

And would you believe it if I said I ride a Jog most days.

Never been inside the covers, you learn something new everyday.

 

[blaster man1]

haha thats cool so i would be ok if i jet in correctly thare on ebay for £18.00 free shipping

 

[Blaaster]

Please excuse me if I refrain to comment, I seldom give advice on something I have no experience with.

 

[Bluesman]

It's probably not even a real Keihin. Probably a junk knockoff.

 

[blaster man1]

hi its got Keihin stamped on it will find out when it gets to me be interesting to c if its real lol

 

[Blaaster]

When you get it look at the choke arrangement, if it has a butterfly, it may not suit a 2 stroke, the carb slide cutaway maybe somewhat different.

 

[blaster man1]

will do dont think it does have butterfly choke but will let you know when i get it thanks for info

 

[Bluesman]

So, apparently this is a real Keihin 26mm PE series carb. This is going to be a fail in so many ways.
OD of stock Blaster carb intake side is 35mm. This one is 33mm. 2mm too small for the intake boot.
OD of the air filter side is 43mm. OD on this one is 48mm. 5mm too big for the airbox.
You're on your own with jetting, because nobody else has tried this.
It's the same size as stock, so no performance advantage for all your trouble.

http://www.keihin-na.com/aftermarket/pe/

 

[blaster man1]

hi its no truoble i enjoy doing things like this in my spare time the carb im getting is a 27mm and a blaster is 26mm is that corect ? amd i can mod the air box side to fit

 

[Bluesman]

They don't make a 27 PE carb. Quite often, carbs are bigger on the intake side than they are in the middle right next to the slide. If you look at that link I posted, you will see that the outside dimensions for the 26 match up with the dimensions in the ebay listing. The biggest issue is that it's 2mm too small going into the intake boot. Even if you do manage to smash the boot down, you run the risk of an air leak at the boot. But, hey, it's your motor. If you want to cob something together to save a few bucks, carry on.

 

[blaster man1]

my quad is my hobby i have kids and other thinks that nead money flung at them so if i thing i can save a few £ on things dont c wats rong with that but thanks for info if it doesnt work then i will learn from it it only cost $18 at the end ov the day

 

[Blaaster]

Some people think that one can just rip the guts out of the Venturi with a lathe tool and enlarge the bore, just don't get sucked into a deal like that.

http://www.iaeng.org/publication/WCE2013/WCE2013_pp1847-1851.pdf

If you do fit the 27mm, make sure yo do a plug chop to confirm the jetting.