2.0L 16V 9a engine into my Mk1 - Injection or bike carbs?

Hi

I am looking on getting a 9a engine transplanted into my mk1 golf Cabriolet, which is currently running a 1.6gGL carb engine.  I am looking on going down one of ttwo routes:

Bike carbs - R6 bike carbs

Converting to an injection system  - I realise this will be a big conversion.

I wanted to know the following:

1.  Is there any advantage or fitting bike carb over the injection system on the 9a engine?

2.  Which system is more reliable?

3. Which gives the better power delivery?

4.  Will the bike carbs require frequent tuning?

5.  Injection will give the better MPG?

Thanks

Omar73 said

Hi

I am looking on getting a 9a engine transplanted into my mk1 golf Cabriolet, which is currently running a 1.6gGL carb engine.  I am looking on going down one of ttwo routes:

Bike carbs - R6 bike carbs

Converting to an injection system  - I realise this will be a big conversion.

I wanted to know the following:

1.  Is there any advantage or fitting bike carb over the injection system on the 9a engine?

2.  Which system is more reliable?

3. Which gives the better power delivery?

4.  Will the bike carbs require frequent tuning?

5.  Injection will give the better MPG?

Thanks

1.) Less wiring to contend with. The only thing I can think of.

2.) Injection would be more reliable in the sense that it would be easier to diagnose faults, as its how the engineers intended and well documented. 

3.) It all depends on how well the engine is set-up. What would be superior to both is throttle bodies. You would have injection and the sound from having carbs,  potentially more tunability but expensive to purchase kit and get it setup right.

4.) Yes the bike carbs will require tuning but how frequently that is depends on mileage / wear and tear. If you don't have experience with how to set them up or no one near you that can I would avoid.

5.) Injection will indeed give you better fuel economy.

If it was my engine I would get head work and throttle bodies with a decent ignition / ECU system to get the most out of the engine but then it all comes down to cost in the end.

Cheers Rich
 

When you say converting to an injection system, the Corrado with 9a engine had the KE-Jet system, so it should be simple to put that all together.

The system does have a bit of a reputation I believe  (justified or not) for unreliability. However, when set up right, it's a great engine. I owned a Corrado last year with this and loved the engine. In a MK1 it would be pretty sweet I reckon

Thanks.

My mk1  is currently set up to run a carburettor and therefore I would need to have injection lines as well as fuel pumps put into the fuel tank as well as all the wiring and therefore extra cost.

I want to weigh up what is the best way forward as the car will only be used at weekends in the summer.  At the most the mileage would be 1000 miles a year.

It sounds like the bike carb route would be ok since it will only be used in the summer for drives out at weekends!

Is there a bike carb that would best suit the 2.0l 16V?

Thanks

You're probably right then on going the carb route.

I know nothing of bike carbs so can't helps sadly. I'm sure someone on here will be in the know though!

Istead of the old 9a, how about the not quite so old abf, which comes with electronic fuel injection, still possible to pick up complete mk3 golfs which will have practically everything you need.

I already have the 9A engine.  But thanks abfmk1

Does anybody know if the inlet exhaust of the ABF engine are the exact dimensions as the 9a engine please?  Or does anybody know where is the best place to find out?

Thanks

Yes its got to be carb route then is your only doing 1000 miles a year fuel economy surely doesn't factor in?

My old engine was a 1.4 afh on bike carbs and the fuel economy was actually quite good.

Are you any where near these guys http://www.boggbros.co.uk/ as they would be the people to talk to and tune / provide the conversion as they did for my car before I owned it. If you look them up they have a great reputation for bike carb conversions.

Thanks RichG, there know their stuff on conversion.  Bogg Brothers are very good!

I wanted to know the following:

1.  Is there any advantage or fitting bike carb over the injection system on the 9a engine?
You don't need much experience to fit Carbs it's just fuel,spark and air.
For me this was the best option to do so

2.  Which system is more reliable?
Don't know about injection, but my bike carbs are installed 2 years ago and i never have to change any settings

3. Which gives the better power delivery?
That's hard to say ,i changed the camshaft and bike carbs and the result was 28HP more than the original engine with injection.

4.  Will the bike carbs require frequent tuning?
NO
5.  Injection will give the better MPG?
Don't know what MPG stands for I think you need the Carbs from a R1 not the R6 don't know the measurements but the carbs from the R1 are 40mm.
And the sound is so sweet!!!!!!!!

Cheers Style!
 

Style,

Are you able to share which inlet manifold you used on your 16V engine set up with bike carbs?  Also what other modifications you had to have done to your car to ensure your bike carbs run perfectly?

What exhaust system have you used on your car?

Thanks

PS your car looks sweet.
Any other images of your car?

I don't have a 16V my car car runs 2.0 ABA cross flow
The inlet manifold i have, it's made from stainless steal powder coated. If you have a local steel shop the can make it real easy.
And there are no other modifications needed, my car was original a 1.5 single carb i only change the fuel pump for a electric one.







Home made gasket



My exhaust system comes from Super sprint 52mm.
 

I'm also running an ABF on R1 bike carbs, as already mentioned bogg bro's are the men they made my manifold and set them up two years ago now and are still running sweet.
The main advantage for me personally must be the sound ☺

I probably buy a 9A to with carbs again 

I probably buy a 9A to with carbs again 

I probably buy a 9A to with carbs again