H-I-J '76 Nova re-fit. - Page 189

doglover44 · 02-06-2021, 11:20 PM

You still in or done ?

Nmbr1GMfan · 02-06-2021, 11:27 PM

Quote:

Originally Posted by doglover44

You still in or done ?

We were out in R1.

doglover44 · 02-07-2021, 01:56 PM

But at least you got data to work with

Nmbr1GMfan · 02-08-2021, 04:14 PM

Also, as a driveshaft follow up... super happy with the PST driveshaft, not only did they get it done very quick Autumn said the car is now very smooth down track. I can clearly see now on old logs the vibration showed on the Racepak and is now gone.

Nmbr1GMfan · 02-09-2021, 09:56 AM

Here is a vid and a log, way too heavy on the clutch. We're going to get this dialed in and hopefully the switch to radials will follow.

George Wright · 02-09-2021, 12:22 PM

Where is the release for the two step? Is it on the clutch pedal? If so, it looks like it is at the bottom of the pedal linkage. Move the release to the top of the pedal. The graph shows the engine spiking to about 7000 rpm before the drive shaft moves. This means all the counter weights in the clutch are engaging and making your clutch hit hard. Also the engine RPM graph should not pull down to a sharp V on the shifts. It should be more of a U shape on the gear change pull down. Take out some base.

Nmbr1GMfan · 02-09-2021, 12:55 PM

Quote:

Originally Posted by George Wright

Where is the release for the two step? Is it on the clutch pedal? If so, it looks like it is at the bottom of the pedal linkage. Move the release to the top of the pedal. The graph shows the engine spiking to about 7000 rpm before the drive shaft moves. This means all the counter weights in the clutch are engaging and making your clutch hit hard. Also the engine RPM graph should not pull down to a sharp V on the shifts. It should be more of a U shape on the gear change pull down. Take out some base.

Exactly, now I just need to get it done.

FED 387 · 02-09-2021, 02:21 PM

Todd---JUST before launch it appears that the car is moving forward just a touch ever so slight (rolling????)---or is the clutch dragging the car thru the lights--Its not sitting at a dead stop and then BAM launch--- look at around 1:29 on the video--is the line loc on or did Autumn take her finger off and is just sitting waiting for the tree to come down to the last light??? FED 387

Nmbr1GMfan · 02-09-2021, 02:34 PM

Quote:

Originally Posted by FED 387

Todd---JUST before launch it appears that the car is moving forward just a touch ever so slight (rolling????)---or is the clutch dragging the car thru the lights--Its not sitting at a dead stop and then BAM launch--- look at around 1:29 on the video--is the line loc on or did Autumn take her finger off and is just sitting waiting for the tree to come down to the last light??? FED 387

Line lock is not on and clutch need just a tad more air gap.

FED 387 · 02-09-2021, 07:40 PM

THat's what I would of thought---Car looks awesome---the whole program is coming together--Regards Dick

02-06-2021, 11:20 PM	#1881
doglover44 VIP Member Join Date: Jun 2008 Location: New Carlisle OH Posts: 1,275 Likes: 3 Liked 395 Times in 182 Posts	Re: H-I-J '76 Nova re-fit. You still in or done ? __________________ Jake Biermann

02-07-2021, 01:56 PM	#1883
doglover44 VIP Member Join Date: Jun 2008 Location: New Carlisle OH Posts: 1,275 Likes: 3 Liked 395 Times in 182 Posts	Re: H-I-J '76 Nova re-fit. But at least you got data to work with __________________ Jake Biermann

02-08-2021, 04:14 PM	#1884
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,766 Likes: 1,197 Liked 1,957 Times in 492 Posts	Re: H-I-J '76 Nova re-fit. Also, as a driveshaft follow up... super happy with the PST driveshaft, not only did they get it done very quick Autumn said the car is now very smooth down track. I can clearly see now on old logs the vibration showed on the Racepak and is now gone. __________________ Todd Greene Last edited by Nmbr1GMfan; 02-08-2021 at 04:18 PM.

02-09-2021, 09:56 AM	#1885
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,766 Likes: 1,197 Liked 1,957 Times in 492 Posts	Re: H-I-J '76 Nova re-fit. Here is a vid and a log, way too heavy on the clutch. We're going to get this dialed in and hopefully the switch to radials will follow. __________________ Todd Greene

02-09-2021, 12:22 PM	#1886
George Wright Member Join Date: Nov 2002 Location: Michigan Posts: 178 Likes: 6 Liked 346 Times in 31 Posts	Re: H-I-J '76 Nova re-fit. Where is the release for the two step? Is it on the clutch pedal? If so, it looks like it is at the bottom of the pedal linkage. Move the release to the top of the pedal. The graph shows the engine spiking to about 7000 rpm before the drive shaft moves. This means all the counter weights in the clutch are engaging and making your clutch hit hard. Also the engine RPM graph should not pull down to a sharp V on the shifts. It should be more of a U shape on the gear change pull down. Take out some base. __________________ George Wright https://9500rpm.com

02-09-2021, 02:21 PM	#1888
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 329 Liked 280 Times in 150 Posts	Re: H-I-J '76 Nova re-fit. Todd---JUST before launch it appears that the car is moving forward just a touch ever so slight (rolling????)---or is the clutch dragging the car thru the lights--Its not sitting at a dead stop and then BAM launch--- look at around 1:29 on the video--is the line loc on or did Autumn take her finger off and is just sitting waiting for the tree to come down to the last light??? FED 387 Last edited by FED 387; 02-09-2021 at 02:26 PM. Reason: spelling

02-09-2021, 07:40 PM	#1890
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 329 Liked 280 Times in 150 Posts	Re: H-I-J '76 Nova re-fit. THat's what I would of thought---Car looks awesome---the whole program is coming together--Regards Dick