1.1 to 1.4 16V...

Hi guys,

Im gettin' pretty bored with the measly power and 4 speed gearbox of my 1.1c and after doing a bit of reading up I'm interested in swapping it over to the 1.4 16v engine from a MK4 Polo 6N.

Now I've done a fair bit of research and come up with the following parts list:

1.4 16v AFH Engine
Polo Mk2/3 5 Speed Gearbox (with required bracket/mount changed)
Polo Mk2/3 Clutch & Flywheel
Polo Mk3 Starter Motor
CBR600 Bike Carbs
Bike Carb Manifold
Facet Solid State Fuel Pump
Filter King Fuel Regulator
Weber Throttle cable. Part Number: 99901628
Weber Pedal Block. Part Number: 99901645
Stainless Steel Exhaust Manifold

There's a few things which I'm still not sure about.

What alternator should I use, because I've read over at Club Polo that the Polo Mk2/3  (I'm guessing the same as a Mk1 golf?) alternator needs modification to fit. Can I fit a Polo Mk4 6N alternator without fouling?  

Also…..ignition. Now my knowledge of ignition is limited so please be patient. I've heard of the approach of fitting a Polo Mk2 electronic dizzy (Part Number 030 905 205 A or 030 905 205 B), Polo Mk2 ignition module, Polo Mk2 ignition loom and Polo Mk2 coil. However, I'm struggling to find the correct parts (mainly the ignition module and loom) and wondered if there was another alternative?

Any help or advice is much appreciated!

Cheers!

i have to tell you that the above engine is the worst vw engine made. the gearboxes are prone to rivets pulling through the casing and the engine either throws the belt or the bottom end knackers up without warning.
they are also low on power.
have a look at another engine please as the process of fitting wont be much different

dany_sims said

i have to tell you that the above engine is the worst vw engine made. the gearboxes are prone to rivets pulling through the casing and the engine either throws the belt or the bottom end knackers up without warning.
they are also low on power.
have a look at another engine please as the process of fitting wont be much different

I've heard of gearbox problems, that's why I was planning on using a mk2/3 5-speed box instead of the fault prone mk4 6n box.

100bhp for a 1.4 out the factory is pretty high in my eyes. Plus I've heard stories of power hikes using the bike carbs as it creates a more free flowing induction route. 50bhp from the standard 1.1 is low powered, so 50bhp extra from 300cc's sounds right to me. Plus it keeps the light, revvy characteristics of the small block engine which I love.

mk2/3 golf box and flywheel/clutch/starter will also work, same stuff. your old flywheel and starter will probably work as well, in fact most of the old bits you can keep as engine/box is essentially the same. The reason the guides say polo 2/3 is because you read it on a polo forum i guess

the boxes die because the polo is so heavy, its the same box in them as it is in mk2/3 golf/polo. 112bhp is pretty good for a 1.4 id say!

alternator see how it goes, the modification could be due to how the engien fits in the polo chassis, which wont be quite the same as putting it in a mk1. if not the old one should swap over i think.

same with the ignition, mk1/2 golf coil + tci & loom will work as well, same stuff as in polo. match the coil to the leads you plan to fit, early coil lead fitments are different to later ones. the dizzy you need is one with vacuum advance, as you'll be doing away with the injection system. needs to come from later hydro head mk2 golf or polo (3 bolt rocker cover basically)

you might be able to use a mk2 16v ecu with the stock polo dizzy, though i guess the ign advance curve wont be quite right

rubjonny said

you might be able to use a mk2 16v ecu with the stock polo dizzy, though i guess the ign advance curve wont be quite right

Do you think its possible to 're-map' a KR ECU? I've had this idea for a while, as I have a mate with a carb'd turbo'd G40 and was chatting with him about a possible way of getting the perfect timing curve… :dontknow:


If its possible for that then it should be possible for this! 8)

no unfortunately, the most you can do with these is swap out a crystal to change the rev limiter. however if you can find a kstar unit to go with it that'll give you fully remapable ignition, but they arnt so easy to find these days. plus you need to find a tuner who knows them, or try to get the sw. its a dos program btw, to give you an idea of how old it is!

might end up cheaper to go megajolt after all the above hassle tee bee eych

rubjonny said

mk2/3 golf box and flywheel/clutch/starter will also work, same stuff. your old flywheel and starter will probably work as well, in fact most of the old bits you can keep as engine/box is essentially the same. The reason the guides say polo 2/3 is because you read it on a polo forum i guess

the boxes die because the polo is so heavy, its the same box in them as it is in mk2/3 golf/polo. 112bhp is pretty good for a 1.4 id say!

alternator see how it goes, the modification could be due to how the engien fits in the polo chassis, which wont be quite the same as putting it in a mk1. if not the old one should swap over i think.

same with the ignition, mk1/2 golf coil + tci & loom will work as well, same stuff as in polo. match the coil to the leads you plan to fit, early coil lead fitments are different to later ones. the dizzy you need is one with vacuum advance, as you'll be doing away with the injection system. needs to come from later hydro head mk2 golf or polo (3 bolt rocker cover basically)

you might be able to use a mk2 16v ecu with the stock polo dizzy, though i guess the ign advance curve wont be quite right

Cheers for the reply rubjonny. Some great advice there.

I guessed that most of the parts were interchangeable between the polo Mk2/3 and golf Mk1, its just getting the right combination of parts that I'm struggling with at the minute.

So it looks as though I need to raid a breaker polo somewhere for its vacuum advance dizzy, ignition module and loom.

Also another quick question. My 1.1c doesn't have a tachometer, can I use one from a big block mk1 golf and connect that to the new engine/box configuration?

Cheers again.

mk2 golf would probably easier to find, uses same dizzy and ignition parts. the loom from a mk2 woudl fit a mk1 better as i think the mk2 polo dizzy is on the chassis leg.

yep any mk1 golf or mk2 polo rev counter clocks will work, just swap your old speedo into it if the clocks come from a big block car as the speedos on them are calibrated differently

Once again, some great advice rubjonny!

Found a MK2 Golf 1.3 breaking on the bay - hopefully all the correct ignition parts will still be available so I can start collecting parts for the swap!

Cheers for all your help.

MB

coolio, just make sure its later one with the 3 bolt rocker cover and you're away

Its a 1990 MK2 Golf 1.3:

http://www.ebay.co.uk/itm/1990-Volkswagen-Golf-Mk2-1300-1-3-breaking-SUN-VISOR-/300661683857?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4600d53691#ht_797wt_1344

be reet. i realised after i posted that if its electronic ignition then it'll be right no matter what anyway doh

any updates im planning on this conversion for my 1.3 driver

What engine is the AHU from?

I know of the AFH (6N polo) and AHW (Lupo i believe)

Anyone know how many variants of the 1.4 16v engine there was?

good spot, ahu is a 1.9 tdi lump so a typo i think

Thought there was something an amiss

Is the G40 flywheel and clutch a fit onto the 1.4's?

dont see why not, afaik all the 1.0-1.3 clutch n flywheels are pretty much same fitment wise. id imagine the g40 clutch is upgraded though.

Sorry guys... amended accordingly.

I'll be watching this one. I would really like to do this conversion, so would you be so kind as to make a super detailed build thread if you take this on? aha

Cheersss.

Ive now completed this conversion in my mk2 polo running on the stock 16v fuel injection and it goes really well. I never had a chance to thank you johnny, as im sure i emailed you about the wiring. If anyone needs advice or help on doing this in a golf, post it here and ill pop in and reply    .