Man, I could not be happier for you! Congratulations and go kick some butt!!!

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...................and what about you?

LMAO! Still in hurry up and wait mode.

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fify

Great news.

Video of that 4L is a PRIORITY!!!!!!!!!!

Free 1 month access to my OnlyFans if it's while beating down on GT3's or GT4's.....haha

Some pics, debut track test scheduled for Jan 21st 2023 and first race meeting should be Philip Island GP circuit on 4-5 March. More images coming after this weekend

Man I have been waiting for this

A video of the car running would be great.

What model Hollinger sequential has Helical cut gears? I have been meaning to ask you. You told me but I can't freaking find it. Ugg.

I just make love explosions in my pants.

So it is all done apart from final chassis set up and initial dyno. We will run the car with the standard engine but race induction before fitting the 4-litre stroker engine. First test day mid/late Jan and first race meeting (with stroker installed will be end of April)

We're really pleased with the way the induction has come up

Teaser images

Great work sir!

I can't wait to see it run.

Ooooo I wonder what the induction noise is like with that intake and a stripped interior.

Build done, first start (but MP4 is too big to attach).

Just waiting on dyno operator and tuner to return from summer break and we'll put a tune into it and then we are off testing.

Looks a bit naughty. Can’t wait to hear and see more.

So we now have overcome pretty much all of our teething issues.

1. Getting the M150 to understand the VQ37 engine has been a massive challenge. Not a lot of knowledge in this part of the world. Has taken months (my engineer is a personal friend and he has worked on my car for "mates-rates" which means he puts time into the car when he doesn't have other cars to work on
2. We are running 6 x Jenvey ITB set up with a single Bosch Motosport DBW motor and getting this set up to advance the throttle blades on each bank sync'd has been a challenge - you have no idea how much overall torque can be affected by one bank leading the other by as little as 2%
3. The engine in the car (original still until we can test the car and sort out a chassis setup we are happy with) has not run for 3 years and we had some CAS and cam control issues to resolve

So, at least you can now hear the 6 x ITB induction noise at WOT and full load. Best described as orgasmic.

We are off the Winton Raceway (Victoria, Australia) next Tuesday for a systems check (chassis setup/handling, ECU/Dash config, cockpit ergonomics etc). We are only running R-Spec tyres for the moment and won't put slicks on the car until the dry-sumped engine goes in when sorting is complete. Provided Tuesday test goes OK, we are running in Production Sports Cars at The Bend Motorsport Park in Sth Australia and the program has the 4-litre engine installed for Island Magic at Phillip Island in November.

A couple of video's of WOT throttle tuning are here:

https://youtu.be/6TKbKmfg7rs

https://youtu.be/PRZUC9AhkOg

I feel your pain, I am using an Emtron. Firing it up next week I hope. I couldn't get an M150 so I had to go another route.

So we have tested the last 2 Fridays.

On the 21st, things did not go so well. We lost an hours and a half finding and fixing an oil leak at the rear of one cam cover. At some stage, it had taken a knock and there was a hairline crack that was rectified with sealant but the biggest problem was blowing a high-pressure fuel pump fuse twice in the afternoon - clearly something was not right and we did not have the time to pull the tank out and inspect to find the issue.

Last week was spend re-doing the fuel system (found a partially blocked pre-filter in the internal fuel pot which was the root cause). We used the standard tank with CJ Motorsport road race system which works a treat by the way, BUT with the cage in place, serviceability is not great - takes an hour to get to the pumps and ~30 minutes to stitch everything back together, so we've gone for a tank above the floor with external lift and high-pressure pumps that are instantly accessible so its is much better for serviceability.

Some lucky Aussie is going to get the CJ Motorsport system in the near future for 50% off.

Last Friday we tested again (3h20m tow to the circuit). The car ran flawlessly - still running the wet-sump engine and R-Spec tyres (6 years old so not very quick) but I did 6 x 25 minute session and it did not miss a beat. The CIRCO pads are brilliant and the 4.08 ratio and Quaife 1:1 top 6-speed sequential works like an old school bolt-action rifle - slight tug on the lever, the Motec cuts fuel for ~100ms (it is programmed for a 300ms BUT as soon as it senses that the box is in the next gear, it lights the fire again). We log over 200 channels in the ECU and up-shifts take between 90 and 120ms - and the power seems absolutely seamless.

We did have a bit of rich misfire but tweaked the tune and eventually enabled close-loop lambda and picked up a couple of 10ths.

I found the limits of braking fairly quickly with a tour thru the kitty litter at T10 and the limits of grip on the sweeper with an off into wet grass but stayed away from the concrete.

Lap times are nothing special as we are 150hp down on the "fat" engine which will be in the car for a Nov race event but I am learning the car as braking and handling are staggeringly good.

The chassis is that stiff that if you jack the car from the front sill behind the front wheel, the rear rises at the same rate as the front - we reckon we have torsional stiffness of 25,000 kg per degree of torsional twist in the chassis which is why the handling is so good. We made a few suspension setup changes and you could feel the changes on the outlap.

There are still 16 items on the do-list (mirrors, oil/filter change, measure pad wear, minor maintenance items like that). Am really happy with where we are - has only been 7 years since this started but that's life when you are self employed and unsponsored

First event will be on 20-Aug with a 1-day club race event (quali and 3 x 20 minute races).

A few club track-days after that and then the fat engine goes in.

Yeah, anyone making electronic kit is having trouble getting supply.

The Motec is a complicated beast .... very function rich and lots of interconnected settings.

Good luck with the Emtron - they are neat poece of kit

Good to see the Z is up and running. :tup: I know it's been a long road for you. :tup: :driving:

The Emtron is really good. Right up there with the Motec. Just about done. Need to setup the safeties and fun features. It's close.

Well, the car has had its maiden race event (with standard engine)

FB post is here - hopefully you can see it

https://www.facebook.com/groups/zclu...eric&ref=notif

Well, the car has had its maiden race event (with standard engine)

FB post is here - hopefully you can see it

https://www.facebook.com/groups/zclu...eric&ref=notif

Can’t see it if we aren’t a member of that Facebook group!


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Most of us don't do the Facebook stuff.

:iagree:

Apologies for FB SNAFU



So Victorian Sports Car championship Round 4 has been run and the maiden event for the #50 ProdSports Z34 went to plan with an untroubled day.

Times were not anything special (Keith Flanagan you lap times are not threatened yet).

The mega wing is too draggy for a standard engine - I picked up 15kph on entry to T1 by taking 1-click of wing out and will try removing one more the next time at PI.

The chassis is brilliant - T1 mid-corner improved to best of 187kph and it feels like it could take more and this is on 6 yo R-Specs. 1-click wing less made no difference to mid-corner grip and it felt like T1 could be close to flat - that's the level of confidence the chassis inspires.

Brakes are similarly outstanding (AP six pots on the front on 14.25" rotors and 4-pots on the rear on 13" rotors with CIRCO pads. In the end, I was diving inside 75m into Honda and still it was stopping. T1 I was braking after turn in which is inside 50m and there was not a hint of slide mid-corner. Note that speed on entry is down though as it is draggy.

No slicks until I have a dry-sump engine installed - planning on that for Island Magic event at the end of Nov this year so still significant grip to come
.
I am having to unlearn nearly 35 years of experience based on my "other" car as the Z handling and grip is just so superior.

A bit more grunt and optimised drag and slicks will see the times drop.

Off to the final round of our state championship on 15-17 Sept

Good deal. Having fun with it now. I will be back at soon myself.

Great photo!!!!!

Cat looks and sounds mean! Glad to have been following along with this build.

Some video clips of Quali last Saturday and link to the Streamed TV broadcast of the 30-lapper and 12-lap final race - both on Sunday. Our category starts at 2h 28m 50s for the 30-lapper and the 12-lapper starts at 5k 12m 42s

Quali in 2 clips from Saturday. My camera only records in 10 minute lumps because it is 4K – I need to set it up to record at 1080p so the files are not so large
1. https://youtu.be/i-ghHNxL830
2. https://youtu.be/9Rorkc5FHrM

Sunday from the streaming broadcast
https://www.youtube.com/watch?v=7hXmdgmeXuM&t=11031s
Sports cars are at 2h 28m 50s for the 30-lapper and the 12-lapper starts at 5k 12m 42s

Plot being hatched to get the fat engine in the car for our last event in November

So the final update ........

Stroker engine is in the car and has been run-in and tuned on the dyno.

It made 390Nm torque at 8200 rpm on the most aggressive timing but we dialed it back a touch and settled on 370Nm at 8000rpm in the interests of reliability. All done on our hub dyno.

It sounds angry (sorry - no sound bites yet).

Have configured traction control into the Motec as I suspect we will need it.

Testing traction control at Winton Raceway on 2nd Feb before first race meeting on 16-18 Feb as the first event of the season.

Its only been 8 years since starting the journey but we are finally here.

Assuming 12-15% parasitic losses thru trans and diff, I reckon we have around 490Hp at the crank. Pretty happy for an NA engine running 102 octane fuel

Man that’s awesome. Cant wait to get some sound bits.

390 Nm is 287 ft lbs. That seems low. I'm making 289 ft lbs with 334 Hp N/A at the back wheels.

Working on two things with my Emtron. Getting there. Glad you are enjoying your car. It will be a blast.

@ 8200 RPM! Holy crap! That is a ton of torque!

I am still making 370nm torque at 7000rpm though and torque only starts nosing over at 6800rpm. It is still making 360nm at 7800 and power is still climbing at 8000rpm.

390Nm at 8200 was our best but i was right on the edge of knock - that is 335Kw atw (449hp).

We have dialled it back quite a lot on safety grounds as I want the engine to last. so 370nm at 8000 is where we settled which is 310Kw or 415hp all atw

Assuming 15% parasitic losses in the driver train (might be 12%), that is an estimated 485hp at the crank.

So our first race meeting of the 2024 series has been run - Victorian (my home state in AUS) Sports Car Championship.

Car ran like a train after we got rid of the head-fork that was DBW throttle (Sasha Anis told me several times that would be how it ended).

I ran as high as 5th after some of the 911 Cup Cars fell off after they touched but finished 7th outright and first in class.

Bolted on a set of Yokohama A005 slicks and they work the best of Yoki, Pirelli and Michelin. I might try a set of Dunlop slicks in due course.

The only issue is pottering back to the pits after the feature 20-lapper the oil pressure was a bit low (oil temp after a 30-minute race was 112 degC) so I have to get a smaller pulley for the dry-sump oil pump to spin it a bit harder at idle and just off idle. Have to revise the oil-cooler ducting as well and possibly a larger oil cooler at the end of the day.

Tried a set of Circo (Japanese made by Winmax) M207 endurance pads and they were brilliant. Braking performance is simply outstanding.

I'm really happy to be enjoying the car - it has no apparent vices although I am not at 100% yet given it is such a different animal to my old race car.

I am now officially getting old.

On April 25, I collapsed at the dinner table with a bunch of mates whilst attending a track-day event in Sth Australia 500kms from home. I was unconscious for < 60 seconds but transported to a local hospital and observed overnight on a ECG and blood pressure machine. The hospital sent my records to my cardiologist (have been have slight issues with the ECG I am required to have annually since turning 50 for my race licence) and arranged to see him the following Monday.

He looks at the ECG from the 25th and compared to last Dec and says "there is further minor deterioration" but when he compared to 5 years ago - he says the deterioration is significant and I need a pacemaker.

The real cause of the collapse was low blood pressure (105/80) and the root cause was a slow pulse (39bpm). I've always has a slow heart rate but this is "too slow".

When your brain senses low BP, it turns the lights out to make you horizontal so your heart is not working against gravity (clever thing the brain).

So the pacemaker was installed on 7th May.

Then I get a call about 5 weeks later saying "come in the the surgery" asap, which I did.

Because the pacemaker is networked and sends summary data to the manufacturer nightly and they produce a summary of exceptions and email the cardiologist the next morning - the analysis found a 2-hour episode at Atrial Fibrillation (can allow blood to "pool" in heart chambers which can clot resulting in a stroke) so the doc says "blood thinners" for life now.

So, race licence renewal is now in doubt and SWMBO has dictated only 2 race meetings per year and everything else needs to be sprints/track days.

Bottom line - anyone over 70 is likely to experience these sorts of symptoms ..... so us "old f4rts" need to look after ourselves. My formerly 110kg self is now under 100 and heading for 85. Hopefully that reduces cardiac related risks.

Next outing will be a track day on 18th August and race event in early Nov subject to discussion with SWMBO

So, following all the health-related drama of the past 5 months, I am happy to say that my race license remains intact and last weekends club-level event went off without a hitch, finishing 3rd overall and 2nd in class (beaten by a Lotus 430 s/c).

I picked up another 7-10th for a personal best in the Z.

Normal service has been resumed.

Health issues? May I ask what happened?