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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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 Posted: Thu Sep 03, 2009 4:26 am Post subject: quicker steering rack ??? |
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The 931 steering rack is terrible for trackdriing racing.
In Original Porsche 924/944/968' of Peter Morgan I read that the 931 steering rack is 20:1 and the standard 924 is 19,2:1 so a bit of improvement. But they also say originally the steering rack is from a VW Golf/Rabbit which is 17,2:1 so that's even better.
Can anybody confirm that the Golf 1 rack wil fit ??
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Thu Sep 03, 2009 6:37 am; edited 1 time in total |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Thu Sep 03, 2009 5:05 am Post subject: |
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There are three different manual racks available for the 924 (which of course will all fit on the 931). I believe they all have different ratios, although I don't recall off hand what the part numbers are or their respective ratios. I don't think any of them are as quick as the VW you mention, and I have no idea if the VW unit will work. But the point being, you need to identify which rack you have first. I know for a fact that the 931 came stock with at least two different racks, and it may have been a S1 / S2 part split. There are a couple of threads here on the topic which some careful searching should turn up, and PET will probably reveal the different part numbers and model year splits, although you'll need to be a bit more investigative to correlate those part numbers to the actual steering ratios...
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erstwhile owner of just about every 924 variant ever made |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Thu Sep 03, 2009 5:59 am Post subject: |
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Have you looked at this?
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78 924 NA
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bass gt
Joined: 02 Dec 2004
Posts: 971
Location: Johannesburg for now!!
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| Posted: Thu Sep 03, 2009 6:15 am Post subject: |
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| !tom wrote: | | Have you looked at this? |
As an udate to the above post, i had the custom rack made. it used the quick rack available from Quaife, with a custom made pinion to suit the 931 rack housing. The Quaife rack required is the golf LHD for RHD 931's and vice versa for LHD 931's. From memory, the 931 uses an inverted Golf rack, hence the need to aquire the reverse type.
The end result is a rack with 2:6 turns lock to lock, which is a massive improvement over stock. However, as a word of warning, it makes the steering very heavy which if you run wide tyres, might make road driving rather tricky. However, on a dedicated track car, it is a real improvement, but not cheap!
Steve
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Front Wheel Drive is the Devil's work. |
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Thu Sep 03, 2009 6:53 am Post subject: |
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Pet shows:
477 419 061 C - LHD
478 419 061 A - RHD - 924
478 419 061 B - RHD - 924 Turbo/ GT
Strange........
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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bass gt
Joined: 02 Dec 2004
Posts: 971
Location: Johannesburg for now!!
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| Posted: Thu Sep 03, 2009 7:01 am Post subject: |
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| Dutch924-racer wrote: | Pet shows:
477 419 061 C - LHD
478 419 061 A - RHD - 924
478 419 061 B - RHD - 924 Turbo/ GT
Strange........ |
Why so?? The steering racks on RHD cars are different because of the slanted engine and exhaust manifold. And the RHD 931 has the turbo in the way. Check out the cross members in PET and you'll see why they are different
Steve
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gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
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| Posted: Thu Sep 03, 2009 4:06 pm Post subject: |
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Donīt forget that the spindle on the ROW turbo (and option M471) got 10mm longer arms. Thats why the ratio and turning circle increased, but the number of turns lock-to lock is stil 4,02.
Please correct me if I am wrong but did the Golf mk1 set from Quaife fit? If a remember correctly, the splines or pinion was too short
I am interested in buying one of those quick racks, but we need a group buy to make it interesting for Quaife.
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Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
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Elektrobank
Joined: 19 Mar 2007
Posts: 149
Location: Pozzuoli,Napoli, Italy
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| Posted: Fri Sep 04, 2009 6:38 am Post subject: |
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| bass gt wrote: | | !tom wrote: | | Have you looked at this? |
As an udate to the above post, i had the custom rack made. it used the quick rack available from Quaife, with a custom made pinion to suit the 931 rack housing. The Quaife rack required is the golf LHD for RHD 931's and vice versa for LHD 931's. From memory, the 931 uses an inverted Golf rack, hence the need to aquire the reverse type.
The end result is a rack with 2:6 turns lock to lock, which is a massive improvement over stock. However, as a word of warning, it makes the steering very heavy which if you run wide tyres, might make road driving rather tricky. However, on a dedicated track car, it is a real improvement, but not cheap!
Steve |
i'm using a quaife RHD golf I in my LDH 1980 931
every thing is perfect now, originally quaife supplied an SKF pinion bearing that failed in 2.000 kilometers... it was too small! 10 x 32 x 7 (id - od - height)
now i found a special FAG bearing that supports axial and radial loads much better than the original bearing it measures 10 x 32 x 10
with a 3millimeter shim now works very well 
and i can confirm... sheering wheel it's TOO HEAVY!! with 205 tyres and spacers on front 
bass gt why a different pinion? the original quaife kit worked well in the 931 rack... all the parts supplied from quaife fitted my steering rack very well... only the bearing was very poor...
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924T Dta inj + sequential LPG
Cosworth
MotoMorini 501
Moto Morini 350 K2
lot of fun but always on foot.... |
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gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
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| Posted: Fri Sep 04, 2009 7:32 am Post subject: |
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Was it bolt-in, no machining, adjustments or problems at all? This is great news!!!
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Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
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Elektrobank
Joined: 19 Mar 2007
Posts: 149
Location: Pozzuoli,Napoli, Italy
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| Posted: Fri Sep 04, 2009 8:47 am Post subject: |
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| gegge wrote: |
Was it bolt-in, no machining, adjustments or problems at all? This is great news!!! |
yes everything is bolt-in
if needed i can give you the Fag bearing serial number (23 eur) that is stronger than the original supplied from quaife (7 eur)
_________________
924T Dta inj + sequential LPG
Cosworth
MotoMorini 501
Moto Morini 350 K2
lot of fun but always on foot.... |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Fri Sep 04, 2009 1:38 pm Post subject: |
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| Elektrobank wrote: | | i'm using a quaife RHD golf I in my LDH 1980 931 |
Is this the one?
Volkswagen Golf Mk1 RHD Quaife quick rack & pinion kit 2.9
| www.quaife.co.uk wrote: | Product code: QSF18R001
Catalogue Page: 77
Manufacturers: VW
Ģ123.60 (Unit price exc. VAT)
Volkswagen Golf Mk1 RHD Quaife quick rack & pinion kit 2.9 is available to fit Volkswagen Golf Mk1 models as an upgrade to the original steering rack.
2.9 turns lock-to-lock. |
| Elektrobank wrote: | | if needed i can give you the Fag bearing serial number (23 eur) that is stronger than the original supplied from quaife (7 eur) |
Ummm...YES! Please post the part number here for all to see
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erstwhile owner of just about every 924 variant ever made |
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bass gt
Joined: 02 Dec 2004
Posts: 971
Location: Johannesburg for now!!
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| Posted: Fri Sep 04, 2009 7:44 pm Post subject: |
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Guy's,
Don't forget that my car is RHD. As such, the steering rack is different, as shown above in the PET listing. The RHD crossmember has a hole in it which the pinion runs through, in order to clear the turbo. As such, the pinion is longer overall, where the first knuckle splines are.
Steve
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gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Fri Sep 04, 2009 9:13 pm Post subject: |
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OK, I need photos. How is that a RHD rack can be fitted to a LHD car? Isn't the connection for the steering shaft on the wrong side and at the wrong angle? Maybe I'm being thick, but I can't get my head around how this conversion actually works.
But I'm definitely interested in the power-steering version...definitely don't need anything that's going to make the steering heavier in the UWB car...
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erstwhile owner of just about every 924 variant ever made |
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Sat Sep 05, 2009 4:45 am Post subject: |
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What do the ratios mean like 20:1 etc. Can you convert those to lock to lock ?
And what does lock to lock exactly mean ?
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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