Club G40 Forum

Technical => Chassis & Braking => Topic started by: shaun_89 on October 25, 2010, 03:52:56 pm

Title: mk1 golf conversion
Post by: shaun_89 on October 25, 2010, 03:52:56 pm
I have heard someone mention using mk1 golf driveshafts and i believe struts aswell on a mk3. I was wondering if this is true then would you then use mk1 golf cv's.

If this is all true would a ppp stage 3 subframe still fit?

thanks
Title: Re: mk1 golf conversion
Post by: Etches on October 25, 2010, 05:56:52 pm
I know that mk1 struts have been used (modified to fit) and that the frames fitted with this. Don't strictly know about the mk1 driveshafts although i would presume they do as ive useddriveshafts from mk3 polos on mk2 and mk3 small block golfs.
Title: Re: mk1 golf conversion
Post by: youngprodigys on October 31, 2010, 02:18:52 pm
MK1 coilovers on my mk3. used the larger mk1 golf cv joint (outer)

(http://www.youngprodigys.com/randoms/car-august09%20056%20(Medium).jpg)
Title: Re: mk1 golf conversion
Post by: hardchargin40 on October 31, 2010, 03:25:30 pm
Nice one!

How did you work out the correct steering TCA bracket position height?  Side by side comparison?  Always wondered about it. ;D
Title: Re: mk1 golf conversion
Post by: Yoof on October 31, 2010, 04:46:08 pm
Providing the setup you'll use fits the stock ARB/TCA then our frame will too.

Kriz- you got pics of the Mk1 Golf CV Joint next to a Mk3 one, out of interest?
Title: Re: mk1 golf conversion
Post by: shaun_89 on November 01, 2010, 06:09:24 pm
Are the mk1 coilovers a straight fit with everything lining up? Or was modification of the steering arms or tca's needed?
Thanks
Title: Re: mk1 golf conversion
Post by: hayesey on November 01, 2010, 06:16:45 pm
You have to weld polo steering arms to the struts.
Title: Re: mk1 golf conversion
Post by: shaun_89 on November 01, 2010, 06:28:18 pm
You have to weld polo steering arms to the struts.

What do you mean? Is it done in the pic above?
Title: Re: mk1 golf conversion
Post by: hayesey on November 01, 2010, 06:36:42 pm
Yeah that big black arm the track rod end ball joint bolts to doesn't exist on golf struts
Title: Re: mk1 golf conversion
Post by: shaun_89 on November 01, 2010, 06:39:43 pm
I get you know, so youd be able to postion it where you wanted to? Like when its lowered on the gaz coilovers?
Title: Re: mk1 golf conversion
Post by: youngprodigys on November 01, 2010, 07:40:07 pm
yo!
i havent got a side by side comparison - but the original G40 outer cv joint went into the mk1 golf hub and had about 4-5mm of difference!!! it would spin round in the hub no problem without any of the teeth touching! so the mk1 golf gti hub is bigger on the spline dimension.

i worked out the height by lowering the car on the deck with no arms connected and set it how high i was going to run it - then marked it on the strut. - the ackerman angle i then copied by using the same angle you have on the standard shocks - and this works perfect:-) guy (mclovin on clubpolo) fooked this part up when he copied me and had the wrong angle so it steered like a pi$$ed up shopping trolley and had to come round mine to put it right.
there are 2 types of hub on the mk1 so make sure you get the "GTI" hubs as the lower spec ones have a different ball joints and wont fit!

i no longer have these as coilovers - there now air ride

(http://www.youngprodigys.com/AIRRIDE/Photo%20165%20(Small).jpg)

il try and answer any questions as soon as i get time

KiZ
Title: Re: mk1 golf conversion
Post by: Etches on November 01, 2010, 08:13:25 pm
What's people choices on coilovers to use with this modification? I presume its worth spending a fair amount on coilies but quite afew of you have chosen shocks n springs combos over this. What's your thoughts?
Title: Re: mk1 golf conversion
Post by: newt on November 01, 2010, 10:02:21 pm
whats so good about mk1 golf legs?
no harm meant to people running them, just curious why you do it?
Title: Re: mk1 golf conversion
Post by: Puncharado on November 01, 2010, 10:39:20 pm
whats so good about mk1 golf legs?
no harm meant to people running them, just curious why you do it?

For very low cars the seperate hub and strut allows for a little camber adjustment to get the wheels back to a decent angle.
Title: Re: mk1 golf conversion
Post by: newt on November 01, 2010, 10:55:31 pm
whats so good about mk1 golf legs?
no harm meant to people running them, just curious why you do it?

For very low cars the seperate hub and strut allows for a little camber adjustment to get the wheels back to a decent angle.

ah ok
 i presume also that it enables to be run lower as mk1 shocks (inserts) are shorter than g40 ones
Title: Re: mk1 golf conversion
Post by: hayesey on November 01, 2010, 11:16:44 pm
Much bigger choice of coil overs for mk1 golf than polo. Possibility of stronger cv joints is interesting though!
Title: Re: mk1 golf conversion
Post by: Puncharado on November 02, 2010, 01:23:38 am
Possibility of stronger cv joints is interesting though!

Not everyone goes and breaks theirs Hayesey! ;)
Title: Re: mk1 golf conversion
Post by: hayesey on November 02, 2010, 09:14:39 am
even if they don't go and snap them by being stupid, they don't last all that well with ~200lb/ft going through them :D  so if golf ones are indeed stronger then that's worth looking at.  I think I'll get hold of one and compare, I've got loads of old mk3 polo ones knocking about in my garage.
Title: Re: mk1 golf conversion
Post by: youngprodigys on November 02, 2010, 09:40:54 am
yer the camber adjustment was awesome- im down really low and my wheels are straight. they can go a little bit lower aswell. but the biggest reason was cost! i made mine 2years ago and cost £160 for the shocks (fr&rr) £30 for the hubs, bearings and new hubs £65 and the old shocks cost a fiver from scrappy as they were bent and the welding was £10. i didnt need to buynsome stuff new but i did and the total package was £270 + £90 for the new cv joints.
this is still cheaper then the 700+ KWs which were the only ones i could buy at the time. i know guy had all the parts i used lying about so his conversion cost him only the cost of the philJ shocks!!!! bargain!
Title: Re: mk1 golf conversion
Post by: hayesey on November 02, 2010, 10:11:44 am
I'm currently using polo struts I've converted to coilovers using a £50 coilover conversion kit from rallydesign:

(http://derby.polog40.co.uk/photos/coilovers1.jpg)

Even cheaper but doesn't give adjustable camber, but then I have adjustable bottom arms now so that covers that.  What top mounts did you use with yours as the golf ones are bigger diameter piston rods arent they?

when my current koni shocks wear out I'll probably replace my front setup with golf stuff since I'll probably be able to get shocks more matched to the very stiff springs than any I've found for a polo strut.
Title: Re: mk1 golf conversion
Post by: youngprodigys on November 02, 2010, 10:47:28 am
top mounts are easy- i used early audi 80 mounts which are identical to polos but with a 14mm hole in the bearing- or just tap the bearing out of a mk2 golf top mount and swap it with the one fitted to the polo one- job done
Title: Re: mk1 golf conversion
Post by: hayesey on November 02, 2010, 02:11:43 pm
yeah audi 80 ones was what I'd heard about too.
Title: Re: mk1 golf conversion
Post by: mini mayhem on December 27, 2012, 06:30:11 pm
Kiz

Have you got a pdf of the how to that was posted on the other place?

I have done what Guy did and messed up the angles  ::) .

 
Title: Re: mk1 golf conversion
Post by: youngprodigys on December 29, 2012, 01:46:30 pm
im not sure why i would have a pdf of it???? :-S

but no i dont
Title: Re: mk1 golf conversion
Post by: mini mayhem on December 29, 2012, 04:52:59 pm
worth asking.

Cheers.
Title: Re: mk1 golf conversion
Post by: petegt on February 19, 2013, 02:21:00 am
I am collecting the parts to do this on my gt bready. The last parts I need are the audi top mounts and the cv joints.

I am struggling to find the correct cv joints? Also does anyone know how long the spacer should be for the bottom bolt of the rear coilovers so I can make one instead of use washers? Just trying to get stuff done ahead of time as I dont want my car off the road for too long.
Title: Re: mk1 golf conversion
Post by: mini mayhem on February 20, 2013, 10:37:55 pm
mk2 scirrocco cv joints are what I used and they fit.

Just take the bushing out of the bottom of the polo shock and fit to coilover, easy
Title: Re: mk1 golf conversion
Post by: petegt on February 21, 2013, 12:58:46 am
mk2 scirrocco cv joints are what I used and they fit.

Just take the bushing out of the bottom of the polo shock and fit to coilover, easy
Thanks :) So keen to get it lowered as it looks like its on stilts at the moment with 175/50/13"
Title: Re: mk1 golf conversion
Post by: Yoof on February 12, 2015, 07:28:01 am
Much bigger choice of coil overs for mk1 golf than polo. Possibility of stronger cv joints is interesting though!

Mk1 Golf wheel hub nt a direct fit into Mk3 Polo Strut...  >:(

Back to the lathe...

CV also fouls the housing  ;)
Title: Re: mk1 golf conversion
Post by: petegt on February 12, 2015, 01:34:23 pm
So who here has measured the ackerman angle?  I have calculated it to be 16 degrees but does a polo use ackerman or a variation of ackerman? Will measure soon as the evenings get longer.
Title: Re: mk1 golf conversion
Post by: dougstar21 on March 31, 2015, 10:50:15 am
Yes, pretty much every car on the road uses the Ackerman principle. There are a few examples that don't due to the slip angle of the tyres but unless you're going into development with a certain type of tyre then I would stick with the factory settings.

Some race cars use anti-Ackerman due to their tyre characteristics but that takes a bit of investigation to get right.