Is there a point......

I am just wondering what the main differences will be performance wise between these two options for my engine.

The basic engine is

2l bottom end
crossflow ported and polished head
fast road/race camshaft
motor bike throttle bodies

What I am wondering is what sort of horsepower/torque I would achieve with this setup.

Then what would be the result if I added a turbocharger or supercharger….

I am looking for a proper track/street  car that I can use to annoy people with more expensive motors

I am beginning to wonder if there would have been much differance between the 2l engine and the 1.6 engine that I have removed that already had the ported and polished head and race cam if I had stuck the throttle bodies on that and then either the turbocharger or supercharger.

if you wont a mk1 that leaves more modern cars for dust, i reckon have said it for along a gt td150 lump and modded if you like, people have already said its a more power full option to g60ing a mk1

have u even thought about a td lump

The way a diesel delivers its power (lots of torque low down) means that its difficult to make use of it, ie it will spin the wheels rather than accelerating from the off. This is why 16V engines do well, their power delivery is naturally a little higher up the rev range and suits a lighter car. Look no further than high-revving motorbike engines to see this in action too.

Regarding the first post, I'd say somewhere between a 2l 8v (done the normal way, ie a 2E or 3A with the non-crossflow head) and a 2l 16V (ie 9A or ABF). So, between 130-160bhp. Don't expect too much from the cam or throttle bodies.

You need to rethink using throttle bodies on a turbochaged/supercharged car. Think about it….

yeah I dont see the benefit of using throttle bodies on a turbocharged engine and they would only be used if I went the N/A route.

I've had all sorts of modified engines in my mk1's over the years, 8 valves, 16 valves etc.. and while I loved my race spec 1.6 on carbs the car is quicker, cheaper and more reliable now that it runs a stock ABF on megasquirt and the conversion cost me the same as a decent head job and set of carbs for my 8v 1.6.. its also a better base for a turbo conversion is I decide I need more power..

In my opinion turbocharging is the way of the future. Normally aspirated applications have limitations and are designed for a single purpose, it is difficult to have a normally aspirated engine setup that can double as an everyday driver as well as street/drag racer, however turbo cars have a lot more flexibility especially if you have a variable boost control valve that llows you to manually control boost as you drive. This option give you the flexibility to drive your car daily on pump fuel at safe boost and on the weekends with race fuel in the tank to boost at higher levels.

I drive a MK1 Golf GTS (1983) that is running a 2.0l 8v U-flow (cylinder head config) turbo charged, the car makes 180fwhp and is awesome to drive as a daily vehicle, strong reliable and ridiculously easy on the wallet.

1.8 16v is a nice engine for a mk1, yeah it has a little less power than an abf but 139 is still plenty for such a light car as a mk1. couple it with a short ratio mk1 gti box and theres hardly anything out there on the road that could beat you. hell i had one in a fat ass mk1 cabby and there wasnt much that could keep up with me.

the great thing about the 1.8 16v is they're available dirt cheap, since all the mk2 owners are ripping them out in favour of the abf.  i bought my 1.8 16v for £50, wheras you struggle to get an abf for less than 200 these days still

rubjonny said

1.8 16v is a nice engine for a mk1, yeah it has a little less power than an abf but 139 is still plenty for such a light car as a mk1. couple it with a short ratio mk1 gti box and theres hardly anything out there on the road that could beat you. hell i had one in a fat ass mk1 cabby and there wasnt much that could keep up with me.

the great thing about the 1.8 16v is they're available dirt cheap, since all the mk2 owners are ripping them out in favour of the abf.  i bought my 1.8 16v for £50, wheras you struggle to get an abf for less than 200 these days still

Sorry to hijack. I was thinkin of going ABF route, do these mate up to the mk1 box and what else do you need to complete the conversion??

yup it sure does, main problem is the exhaust as the mk1 16v manifolds mostly wont fit due to abf being taller.

apart from that mostly plug n play, just a case of deciding if you wanna run it on k-jet or abf managment, plus sorting out the fuel system if car wasnt a gti to start with

rubjonny said

yup it sure does, main problem is the exhaust as the mk1 16v manifolds mostly wont fit due to abf being taller.

apart from that mostly plug n play, just a case of deciding if you wanna run it on k-jet or abf managment, plus sorting out the fuel system if car wasnt a gti to start with

Cool, it's a GTI so no worries on the fuel system.

Food for thought, thanks…

Do you guys have any specific aftermarket engine management systems that you use to upgrade performance on fuel injected mk1's? In SA we have many systems that replace the MP9 management, k jet and digifant systems.

Do you find that there is a demand for fuel injection conversions in the UK and Europe?