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Chinese Carbs


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39 replies to this topic

#31 OFFLINE   AMC Rebel

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Posted 17 September 2018 - 09:29 AM

Depending on the model, Ali-Express throws up a few 2 barrel holley clones.

Thanks - interesting


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#32 OFFLINE   DaveDorson

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Posted 18 September 2018 - 07:38 AM

I've had a card telling me I've missed a delivery.  I'll collect it Thursday.

 

Could it be?

 

Or perhaps it's the rest of the parts for the ECU I'm building for when the carbs are utter dog turd and I end up giving up on that and going EFI with bike throttle bodies instead?



#33 OFFLINE   DodgeRover

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Posted 18 September 2018 - 08:09 AM

I've had a card telling me I've missed a delivery. I'll collect it Thursday.

Could it be?

Or perhaps it's the rest of the parts for the ECU I'm building for when the carbs are utter dog turd and I end up giving up on that and going EFI with bike throttle bodies instead?


Is this the speeduino? I have a goldfish memory sorry.
Will it do spark only to try it with the carbs?

#34 OFFLINE   DaveDorson

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Posted 18 September 2018 - 08:16 AM

Is this the speeduino? I have a goldfish memory sorry.
Will it do spark only to try it with the carbs?

 

I've got a speeduino yes.

 

It does fuel and spark if you need it to, you can do ignition only though yes.



#35 OFFLINE   rusty_vw_man

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Posted 18 September 2018 - 03:37 PM

I had a set of Chinese Empi HMPX which I ran on a 1.9 WBX in a VW T25. 

 

I was told they would never work, that kittens would die and I was an idiot. At least 66% of this proved to be untrue. 

 

After some playing with jetting, I found that the biggest issue with them was that all jets and calibrated orifices were not in fact calibrated at all, but more of a rough guess. All four main jets as provided were slightly different sizes for example. Quality control is not that good.   

 

Replacing these with higher quality jets made the world of difference, and they ran really well in the end, gave around 23mpg on a 2 tonne camper with high top doing 12,000 miles a year.

 

 Be interesting to see how you get on with yours....


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#36 OFFLINE   DaveDorson

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Posted 19 September 2018 - 07:47 AM

I had a set of Chinese Empi HMPX which I ran on a 1.9 WBX in a VW T25. 

 

I was told they would never work, that kittens would die and I was an idiot. At least 66% of this proved to be untrue. 

 

After some playing with jetting, I found that the biggest issue with them was that all jets and calibrated orifices were not in fact calibrated at all, but more of a rough guess. All four main jets as provided were slightly different sizes for example. Quality control is not that good.   

 

Replacing these with higher quality jets made the world of difference, and they ran really well in the end, gave around 23mpg on a 2 tonne camper with high top doing 12,000 miles a year.

 

 Be interesting to see how you get on with yours....

 

Cheers.

I suspect mine are from the same place as the EMPI ones, there can't be that many people making knock off weber IDF's after all.

 

I know a few people who've done OK with the EMPI kits, after taking them apart and cleaning them out a bit, then actually setting them up.

 

To be honest, even a brand new weber IDF should have all that done before fitting in my eyes.  Nothing is ready to bolt on, especially after market air cooled VW stuff.



#37 OFFLINE   rusty_vw_man

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Posted 19 September 2018 - 11:41 AM

To be honest, even a brand new weber IDF should have all that done before fitting in my eyes.

 

This is so very true. There appears to be a myth that you buy twin carbs 'ready jetted' and just bolt them on - I've seen people who haven't even attempted to balance them start slagging them off as unsurprisingly they run like crap. 

 

After some fiddling with them, I did find that linkage setup played a huge part in how well they balanced and performed, but this has nothing to do with them being Chinese. The generic hex bar linkage is not that great and I did have issues with my balls wearing down a bit quick (no sniggering at the back). Depending what you are bolting it too there may well be better linkage options - I really wanted the cable sync linkage (https://www.limebug....da-idf-delortto) but it cost more than the carbs!

 

Here's mine built and awaiting fitting - unlike the web pictures they are entirely unbranded and come in a discrete plain brown box, so I reckon they all come out the same factory:

 

WP_20140307_007.jpg


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#38 OFFLINE   DaveDorson

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Posted 19 September 2018 - 12:17 PM

That limebug linkage looks easily replicable with some push bike cables and motorbike parts :).



#39 OFFLINE   Faker

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Posted 19 September 2018 - 04:30 PM

The Chinese downdraught carbs used by the bug tuners over in N.I. seem to be a good job.
reliving my youth

#40 OFFLINE   DaveDorson

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Posted 20 September 2018 - 05:49 PM

I've got some carburettors, but I've also got a load of stuff I need to do before I can unbox them.


I've also got a full speeduino ECU now too.
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