Model Specific Questions and Info > MK3 Golf/Jetta and B3/B4 Passat
Golf 3 wheel hubs - upgrade from 4 bolts to 5
komar:
Hello all! This is my first post ever here so please excuse me if I made mistakes (also English ain't my first language, so if there is something unclear just again, I'll try my best).
I'm gonna start soon working on my project car (1.9L D 1Y NA diesel 1993 golf 3) and I'm still trying to sort some things out before buying parts.
Performance wise it's already clear what I want and how to get it - adding a turbo either from AAZ or golf 2 1.6 td, inter cooler and complete engine tear down and inspection before all of this.
I want to focus on the next crucial part - handling and breaking. The suspension of the car is pretty sh*t (14+ year old shock absorbers and beated to hell springs from hauling heavy trailers) so I'll look for very stiff second hand springs and actually working shock absorbers.
Here comes my main question: can I replace the standard 4 bolt wheel hubs that I have on this golf, with ones from golf 3 GTI 16v without modifying them.
The reason why I want specifically from the GTI is that I own one (yes I own both the 1.9 D and the 2.0 16v golf 3s), and soon gonna replace both the disks and brake pads - figured I'll just replace them sooner and reuse the old ones in the project car (also use my 15 inch Nexen tires >) )
Just to be clear - I'm not going balls out or anything see how much money I have - using second hand parts, that are unsafe (yes I'm aware of that) but also cheap, is my way of enjoying the diesel golf and saving it from the scrapyards...
Also I can't modify the GTI since that is my daily driver and in my country (Bulgaria) you get a pretty hefty fine for each tiny "constructual change" you've made to your car.
Any information is greatly appreciated, if I've missed topic in which this is already answered sorry but my internet search didn't show them and also if there are any others topics about adding turbo to a NA 1Y I'll be happy if you share a link with me - after all you could never have too much information :)
Bigmick77380:
Hello,
First for your question, technicaly, you can do it, hub's have the same diameter (40mm), but you have a problème, brake système don't mount, you need a complete stub axle with the hub.
Next, i have the same car, with approximately the same project, but i directly swap the engine with an AAZ. If you don't want to swap, you need :
-AAZ injection pump with injector line and injector.
-a turbo.
-drill a hole in the crankcase for the return of the turbo oil.
Personally with my aaz i will instal tdi break, mk4 tdi gearbox ( much longer) and i want to build a homemade mechanical system for control a vnt turbo.
Good luck with your project :)
komar:
--- Quote from: Bigmick77380 on May 24, 2018, 06:56:09 am ---Hello,
First for your question, technicaly, you can do it, hub's have the same diameter (40mm), but you have a problème, brake système don't mount, you need a complete stub axle with the hub.
Next, i have the same car, with approximately the same project, but i directly swap the engine with an AAZ. If you don't want to swap, you need :
-AAZ injection pump with injector line and injector.
-a turbo.
-drill a hole in the crankcase for the return of the turbo oil.
Personally with my aaz i will instal tdi break, mk4 tdi gearbox ( much longer) and i want to build a homemade mechanical system for control a vnt turbo.
Good luck with your project :)
--- End quote ---
After starting this thread I've talked to quite a few mechanics and have almost everything figured out.
1: My biggest problem going with the 1Y block is the gearbox - 020 type from which there just aren't much better ones than mine and will split in half after the engine passes 120-130 HP. (for my GTI I can just fit 6th speed from MK4 and call it a day)
2: Transplanting GTI suspension is easy (actually I found all the parts for 110-120 USD/euro) but you need all of it - the rear axle you can just bolt on
the brake calipers, but for the front one you need everything. Biggest problem here are the half-axle hubs that bolt to the gearbox differential - on a GTI and some TDIs (that use 02A gearboxes) they are 100mm while mine are smaller and they simply won't fit.
3: Maximum engine power: Let me just quote 1 guy "till 120 hp you can make it for 250$, for 150 hp even 2 500$ won't be enough".
I'm still going to do my project car, just figured out where are the borders and will try to stay at them (get the max out of it and have weekends rally-cross car).
Bigmick77380:
Yeah, gearbox is an issue, i forget that i mount the aaz axle with the engine x)
For the power, that is not really true, you can make 120HP for nearly nothing, a kkk k14, a custom boost pin, governor mod (4 or 5 mm shim, max fuel adjustement, timing set a 0.95mm/1mm, an intercooler, and you have approximately 120hp.
For more, you can use a bigger pump head (10mm) with a 3mm camplate, but then a don't know about timing...
I'm from france and i see a french thread about an mk2 with an aaz and 200hp, don't pay big money for it, juste take a k24, fuel up the pump (a lot), big intercooler and some pump modification (don't remember what)
komar:
--- Quote from: Bigmick77380 on June 21, 2018, 03:00:46 pm ---Yeah, gearbox is an issue, i forget that i mount the aaz axle with the engine x)
For the power, that is not really true, you can make 120HP for nearly nothing, a kkk k14, a custom boost pin, governor mod (4 or 5 mm shim, max fuel adjustement, timing set a 0.95mm/1mm, an intercooler, and you have approximately 120hp.
For more, you can use a bigger pump head (10mm) with a 3mm camplate, but then a don't know about timing...
I'm from france and i see a french thread about an mk2 with an aaz and 200hp, don't pay big money for it, juste take a k24, fuel up the pump (a lot), big intercooler and some pump modification (don't remember what)
--- End quote ---
I just found kkk k14 with very little play for 25 bucks so yeah - 120hp is quite easy with big front intercooler and TDI fuel pump (that is also cheap). I was thinking of SDI cam also but that would be later in the future.
First I wanna fix my biggest problem: since my poor granny Mariika (dad named it don't ask) started in life as an Austrian car, the body is quite rotten. Fixing it is almost impossible so most likely I'm gonna search for other car in which I'll transplant my engine.
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