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Twin Carbs on a 1300?

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andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#300690
Does anyone have any experience or be able to hazard a guess at what difference (if any) dual carbs would make to a stock 1300dp motor? I'm guessing since I couldn't find anyone who's actually done it, not enough to make it worth the cost.

I was only thinking about it because I was considering repalcing my (broken) muffler with a set of extractors and an aftermarket muffler and was thinking that these wouldn't have the manifold heat pipes.

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 ·

#300696
yeah, many/most extractors have the heat riser pipes still. My Thunderbird pipes do
Pay your debts, CxxT

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#300767
Yes many of the extractor exhaust systems have the heat riser pipe attachments...
but a 1300 would still be OK with twin carbs like kadrons...
I know that there are single port 1500 & 1600 twin carb engines out there.....

Lee
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

lugnuts Custom Title Time!

1,070 posts · joined Aug 2002 ·

#302006
40mm Kads maybe a little big for a 1300,OR SO IVE HEARD :blah

Desert Moose Cut Cut Cut

2,098 posts · joined Mar 2004 ·

#302010
yeah, if your going to spend money best thing to do is get a single weber and new manifold to suit. this will be cheaper and these come without risers and would suit your 1300DP a lot better. you can block the risers on the extractors anyway.

btw' is your car an automatic

andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#302037
No, it's manual.

When you say 40mm Kadrons, what does the 40mm refer to?

lugnuts Custom Title Time!

1,070 posts · joined Aug 2002 ·

#303068
andrewh wrote:No, it's manual.

When you say 40mm Kadrons, what does the 40mm refer to?
The throttle body is 40mm,looking down the big hole is 40mm and it has a venturi in there to choke it down,standard vent is a 28mm.Have a look at MR. Kadrons website lowbugget.com 😉

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#303140
mmmmm, over-carbing. You wouldn't have to worry about a choke, ha ha :P

I have a mate who had twin 45mm webers (with 45mm chokes) on a 5k (1500cc) toyota 4 banger in an early corolla. When it was cold all he had to do was turn the key. for the first 10 minutes all you could smeel was the raw fuel pouring out the exhaust.
😀
However, if even he breathed on the accelerator, the engine would flood and die. 🙁

but I tell you what, it sounded awesome and went really hard! 😎
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

VWFREAK VWFREAK

2,577 posts · joined May 2004 ·

#303169
Kads may be okay but you'd have to reduce the jets a shi load. The sinle webber may be the best option.

andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#303185
Y'know I'm tempted to give it a shot anyway just to see what happens 🙂

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#303190
go'on, you know you want to.....:thumb

Pobjoy once built up a 25hp motor for an oval historic racer with a counterweighted crank and monster induction, said it sounded and went awesome, said a whole bunch of other stuff too, but that's just Stan, he can really talk......mmmm.....ok I'll be quiet now.:o
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#303196
Of course I want to 🙂 It's parting company with hard earned notes that's holding me back.

Anyone want to donate a pair of carbs for me to do some testing with? 🙂

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#303261
geez craig, if Stan starts a frequent flyer program you'll be off on a round the world ticket straght away.

BTW, how does it go? what sort of horses do you reckon it's good for and what did stan actually do to it? He was talking alot at the time he told me, but it was a while ago.
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#303422
Hi

I reckon a single 40mm webber would be a better choice than twins, twins will get out of sync and its a bitch to change plugs with twin carbs, Kadrons make a lot of noise for little affect.

Steve

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#303442
:jesus.................I guess it does take about 11 seconds more to change each plug 😉


andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#303466
It's academic anyway. I figured the only way to find out how well twin Kadrons would work on a 1300 is to put some on there. I've already bought the carbs and manifolds of primate, and just need to get the rest of the bits before I bolt it up and see whether I've wasted my time and money or not.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#303470
Hi Craig

You must have British Leyland hands then.

Steve

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#303473
Have you thought about going 1640cc??? change of Piston and barrels and machining of the heads.......................not too sure how mechanical you are??


Certainly not Japanese hands:repuke😉


andrewh Officially Full-On Dubber

284 posts · joined Jan 2004 ·

#303481
I have thought about it. I've even got a spare 1600 motor sitting in bits out in the shed. Trouble is at the time I bought it my income was limited so I decided not to spend money on it yet.