Project GTR (zed replacement)

[jap.slapper]

I settled on the OSG uprated gear kit and was going to have my box rebuilt with 1-5 and the uprated Holinger sized input shaft. This was going to be pretty expensive at roughly £5k so I was delighted when Ron at RK (who was going to supply and build it) rang to say a customer was breaking a car that he'd built one new for just 700 miles ago. I bought it and made a useful saving.

Out of interest mate what gearbox is Ron at RK currently using on his red R32 and how does this OS box that you're planning on using compare?
Having looked through an old copy of Jap Performance (June '12) he was using a Holinger Engineering 6 speed sequential though it doesn't state the ratios.

In fact how does your GTR compare to his overall chief, I believe his was putting out around the 700bhp mark and was pretty much complete as an overall package, it looked to be extremely well planned out. With the amount of time, effort, money and trial and error that you've put in to yours over the years are you far off where his is at?

[jap.slapper]

More info from Jap Performance and Banzai:

RK had also been using ATS Across carbon 3 plate clutch, transfer box with modified clutch packs (to allow reliable permanent 4WD when required) RK Tuning electronic torque distributor (from 50/50 to 4WD) with an RK Tuning lightweight propshaft.

Tweenie Rob had been using a Holinger 6 speed sequential box and OS quad plate clutch on his own personal R32 (he was quoted as saying that the quad plate clutch was "Just like stock, light pedal, not grabby....its great") he was also using TR Racing driveshafts, Carbonetic 1.8 way dif, Carbonetic 2 way rear diff, TR Racing modified transfer box clutch pack.

and

(Granted this is a drag car but) Kieth Cowie used an OS-88 six speed sequential with custom RB Motorsprt gear cluster and an OS quad plate clutch, OS Super Lock diffs front and rear.

and

Mark Biggers R32 (MGT Racing) used a Hollinger six speed sequential box, Quaife front diff, OS rear diff, Carbonetic triple plate clutch, MGT one piece prop

[Monster]

TBH mate both the RK car and MGT catr are far more developed than mine as they were originally built simply to go racing and showcase each tuner so obv they were no expense spared builds. Both used the same fabricator as me for various mods as they were there when my cage was built so I know them quite well.

Ron has sold that car now and is building a replica Winfield R32. The MGT car is currenlty cleaning up in the Arrowpack saloons having been banned via reg changes from everything else he put it in - I can't remember which but one championship banned 4wd cars so he couldn't run, but they still let EVO's race.....???? But it's serious, even from the outset it was running rear mounted rads and all that and has about twice my power, think last thing I read was nearly 900 at the hubs but I might be wrong. I was up at MGT the other day and Mark did tell me then but I've forgotten.

The Hollinger is generally accepted to be better than the OSG 88 but is roughly twice the price. There is a new one out by Quaife which sits between the two - I know all this as obviously been looking into it, not from personal experience.

It was the OSG 88 I was looking at originally but basically I don't want the ag of regular refreshes. Similarly as I let other people drive the car I don't want someone making it go bang and needing a rebuild mid season, from a cost and no track time perspective. Apparently they take a certain positiveness to make them work well which is fine if you're used it it but if my dad, or a friend jumps in then it could go wrong quite quickly.

I think for track work it would ultimately be a better box, but ever since the beginning I've built this car for reliability on track (with limited success I'll add) so buying a box that needs to be refreshed every 5 mins and one missed gear will (could) bend a fork seems daft to me.

But in answer to your question, mines a long way from RK and MGT cars. Not familiar with the TR car.

Right, gotta run, Heathrow (again) beckons as I'm flying to Brazil tonight.

[jap.slapper]

Yeah I see your point there, I remember chatting with Jamie Sturgess about his latest faux par whilst test driving his brother in laws Porker GT3 last year, he missed a gear change whilst exiting the pit lane and destroyed an £8500 gearbox. Pete (Peter Kyle Henney who's now stepped up from GT3 Cup Challenge and is now competing in Carrera Cup) didn't appear too fussed by all accounts, where as I would be mortified...

Then again Pete has more money than I could ever count whereas I get the hump having to replace a broken light cluster at £65 secondhand off ebay

[Monster]

Well, back from Brazil and the GTR was in the garage waiting for me

However, I couldn't go and try the new 'box as the front pads were really low - daz said he was worried the pistons were gonna leave the calipers on the short run back to mine from Whifbitz - so I was under strict instructions not to "use" it. NEw Porterfields are arriving from the States Mon/Tues so hopefully I can get a blast out this week.

Daz reckons it's quieter than the incredibly noisy stock box that came out, but much louder than a std box should be, but that was all the feedback as he was crawling.

The front bearings were both totally shot and apparently a real sod to get out, so at least that's another job done.

However, there is also loads of play in one of the front top arms, and also in the hicas replace kit - AGAIN! This is really pissing me off. "avid" readers of this thread will know I relaced all the rose joints one, then bought a DW Hicas replace kit and knocked one of their ones out in one TD. Now they're all full of play.

Will have to look into this sharpish as of course changing them is cost, and also agg of having alignment done again. I can't seem to see anyone else having this prob on the forum so don't know why my car eats them...? it's pissing me off though.

So I need a solution prior to the 1st June as going to enter the GTROC Sprint at Blyton Park which looks like it could be a giggle

[jap.slapper]

Were all of your rose joints greased up just before you ventured out on track?

The DW kit does seem to rust up pretty quick, so much so that I made a point of removing everything then rubbing the joints down and lubing' with shit loads of grease just to keep the rust at bay. Though I have noticed also that when they are greased up they seem to attract grit and shit like no else I've seen and I dare say if I didn't wipe it all down and grease them before heading out on track then the friction from the grit would probably do some damage.

Typically the rubber boots covering the joints on the DW kit perishes and quickly becomes useless (I've pulled what's left of the boots off now)

[Monster]

I've never greased them up but agree on the rubber boots. Not suffered rust yet but would imagine it's straight on there if not used (little push for you over the final hurdles chief).

So having put some much higher spec motorsport rose joints on everything else last year, the new DW hicas lockout bars were the weak point and the rose joints were pretty much made of chocolate - they already sent me a new one having killed it in 1 TD. So have order 2 more proper spec ones from Merlin and hopefully I'll have no more probs - touching wood.

On the front I've ordered some new top arms to get me out of trouble, long term I think I'll try and find some uprated bearings for the arms I've got for better wear. Only alternative seems to be an Ikeya kit, which I'm not averse too as I know it's good, but the top arms aren't adjustable, it's the bottom arms, and it's a very expensive kit so maybe one for the future.

Hoping all this stuff turns up sharpish, aswell as the brake pads which are delayed in the US apparently, as I've entered the GTROC Sprint on 1 June, looking forward to it

[jap.slapper]

That GTROC Sprint Series looks bloody good from what I've seen, I think this clip is from earlier this year (it's Castle Combe isn't it?)

I guess you've already seen this but still worth another look, the guys seem like they're going some....


http://www.youtube.com/watch?v=xQNDAtyfd7Q


I reckon you're going to do well mate

[Maxx]

... as I've entered the GTROC Sprint on 1 June, looking forward to it

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[jap.slapper]

So it was Castle Combe, this guys data logger display looks pretty useful....though his lap timer doesn't seem to be working?


http://www.youtube.com/watch?v=FjU6nJGUJLE


I think his GTR got a bit hungry at 1:12 though