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BGTV8 VQ40HRGA Race engine build

Originally Posted by BGTV8 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

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Old 07-30-2023, 01:07 AM   #181 (permalink)
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Originally Posted by BGTV8 View Post
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
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.
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Old 08-23-2023, 03:12 AM   #182 (permalink)
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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
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Old 08-23-2023, 03:20 AM   #183 (permalink)
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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
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Old 08-23-2023, 11:06 AM   #184 (permalink)
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Can’t see it if we aren’t a member of that Facebook group!


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Old 08-23-2023, 01:21 PM   #185 (permalink)
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Most of us don't do the Facebook stuff.
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Old 08-23-2023, 05:20 PM   #186 (permalink)
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Most of us don't do the Facebook stuff.
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Old 08-23-2023, 10:26 PM   #187 (permalink)
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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
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Old 08-24-2023, 12:33 AM   #188 (permalink)
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Good deal. Having fun with it now. I will be back at soon myself.
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Old 08-27-2023, 06:38 AM   #189 (permalink)
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Great photo!!!!!

Cat looks and sounds mean! Glad to have been following along with this build.
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Old 09-18-2023, 04:41 PM   #190 (permalink)
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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
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Old 01-11-2024, 04:35 PM   #191 (permalink)
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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
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Old 01-11-2024, 06:53 PM   #192 (permalink)
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Quote:
Originally Posted by BGTV8 View Post
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.
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Old 01-11-2024, 07:09 PM   #193 (permalink)
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390 Nm is 287 ft lbs. That seems low. I'm making 289 ft lbs with 334 Hp N/A at the back wheels.
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Old 01-11-2024, 07:10 PM   #194 (permalink)
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Working on two things with my Emtron. Getting there. Glad you are enjoying your car. It will be a blast.
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Old 01-11-2024, 07:27 PM   #195 (permalink)
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390 Nm is 287 ft lbs. That seems low. I'm making 289 ft lbs with 334 Hp N/A at the back wheels.
@ 8200 RPM! Holy crap! That is a ton of torque!
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