looking to put carbs on my MK3 1.3, and wanted to know if the carbs i've got off my old scrapper bike

so they are off an XJR1200 1997

will these be too much?

cheers guys

rich

Id use 400cc carbs on a 1.3

bogg bros say 600 cc

Got 600s on mine. There alright, but maxgt put 400,s on his gt and it goes like a rocket lol

thanks guys... sounds like they will be wayyy to big then :p

Max's gt is underfuelling for sure . My mates got them carbs on his ABF, reckon 600's as said above should be good.

Hi , I had a mk2 that I built 1.3 gt on r1 carbs

It went about as well as a mk2 8v gti golf .

And did 280 miles to 45 quids worth of petrol if that helps at all

Max's gt is underfuelling for sure . My mates got them carbs on his ABF, reckon 600's as said above should be good.

Yeah it was underfuelling, could see on his wideband. Needed to go up a couple jet sizes.

It was still almost a second quicker than the three 1.3 mk2's which were there, 2 of which were on cbr600 carbs and one on a webber

Id use 400cc carbs on a 1.3

Bitch please....

ZZR1200's :lol: :lol:

Overkill FTW

They were down as 600's when i bought them, only when i took them to the bike shop they told me 600's were a different shape and these were 1200's so he had to order other parts.

Tbh, I've had no issues and at 40odd mpg with 180jets i must have done something right. :lol:

Peak power or drivability?

What do you want?

Peak drivability

Peak power or drivability?

What do you want?

Nither just the NOISE!!!!!

:lol: :lol: :lol:

I find that mounting plate both pikey and genius at the same time

Such effort haha

It's been covered so I'm not adding much here, can't be arsed to find a link in the FAQ, but basically the highest intake air speed needs to be in the carb's venturi, so that needs to be smaller than the inlet valve for maximum efficiency.

Efficiency = speed, response, economy, MoT pass..

600 cc jetted to 150 for a 1.3

600 cc jetted to 150 for a 1.3

What?!

The size of the ZXR400 carbs i have (Throat size) is perfect for the size of inlet valve, get the fuelling right and its spot on.

Mine was underfuelling when the carbs were standard, now the mains have gone from 0.95 to 1.45 and what at 3-7K rpm looks good. Needles still need tuning as do idle screws.

1200 carbs on a 1.3 must be no where near peak effieciency.

Max's gt is underfuelling for sure . My mates got them carbs on his ABF, reckon 600's as said above should be good.

It was underfuelling on standard mains, as you'd expect. But after sorting that and the needles out its much quicker than any other 1.3 on 600s

Which carbs has he got an his ABF?

Max when I drove your car last, you could feel it coming on but the AFR literally mirrored the performance, setup well it'd be ace. As both you and I know, with 2-3 changes we made a lot of progress, they're fucking easy!

so say... if i got a hold of a set of CBR600 carbs? would make the mani, new pump, filters, and new jets, right?

Max when I drove your car last, you could feel it coming on but the AFR literally mirrored the performance, setup well it'd be ace. As both you and I know, with 2-3 changes we made a lot of progress, they're fucking easy!

Aye, as soon as the AFR moved away from 10:1 at what it picked up really well, getting to around 14:1, still a bit lean.

400cc carbs are certainly the way to go though, gonna try them on the AEE as it has a similar sized inlet valve.

https://www.facebook.com/rbgregory1

somebody add me please so i can get a proper run through of what i need to do, and how i need to do it

Max's gt is underfuelling for sure . My mates got them carbs on his ABF, reckon 600's as said above should be good.

It was underfuelling on standard mains, as you'd expect. But after sorting that and the needles out its much quicker than any other 1.3 on 600s

Which carbs has he got an his ABF?

They are ZX9R carbs dude

Edited 31 October, 201213 yr by etches69