New Time with Headers - ZR-1 Net Registry Forums

Hammer · 04-07-2008

I added some Watson headers over the winter and took the car out for the first time yesterday. I was rewarded with a best of 12.532 @ 112.79. Best time last year here in Boise was 12.959 @ 109.17. That's a gain of .427 in ET and 3.62 MPH.

I think the headers were a good addition. They sound great and the cars pulls really well through the gears. There might be better times available as I noticed the clutch slipping on the way home. I'll get that replaced and try again later.

04-07-2008

Good times John.

On the clutch, you may have just overheated it some. Take it out later and load it up and see if you can get it to slip.

4DSZR1 · 04-07-2008

Great run John, looks like what you thought it should be.

flyin ryan · 04-07-2008

apples to apples & mods to mods for 2700ft. uncorrected altitude that time is stout, nuf said

Hammer · 04-07-2008

Thanks guys. I like the term stout Ryan, that's cool.

Needless to say I'm looking forward to the Gathering and some near sea level runs. I'm thinkin' 12.30's @ 118 will be possible based on what I picked up there last year. Whoopee, come on PNW Gathering.

Hammer · 04-07-2008

Quote:

Originally Posted by 4DSZR1

Great run John, looks like what you thought it should be.

That's exactly what I was hoping for Rick. Now you gotta plan on going to PIR at the Gathering so we can get you hooked.

Polo-1 · 04-07-2008

dont make me use the spray

Good runs. Where are you shifting @ with the headers?

Hammer · 04-07-2008

Quote:

Originally Posted by Polo-1

dont make me use the spray

Good runs. Where are you shifting @ with the headers?

Right at 7k. I've only run three times so haven't got a chance to see what 6500 will do for the times. I ran my best at PIR shifting at 6500. Hope to get a new clutch in it and try again on May 10th.

XfireZ51 · 04-07-2008

Hammer,

Put a scantool on the car during a run. See if there's any KR going on?

Polo-1 · 04-07-2008

If you still do not have port work, I think you will do better @ 64-6500 rpm.

04-07-2008	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	New Time with Headers I added some Watson headers over the winter and took the car out for the first time yesterday. I was rewarded with a best of 12.532 @ 112.79. Best time last year here in Boise was 12.959 @ 109.17. That's a gain of .427 in ET and 3.62 MPH. I think the headers were a good addition. They sound great and the cars pulls really well through the gears. There might be better times available as I noticed the clutch slipping on the way home. I'll get that replaced and try again later. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

04-07-2008	#2
Jeffvette Guest Posts: n/a	Re: New Time with Headers Good times John. On the clutch, you may have just overheated it some. Take it out later and load it up and see if you can get it to slip.

04-07-2008	#3
4DSZR1 Join Date: Dec 2005 Posts: 692	Re: New Time with Headers Great run John, looks like what you thought it should be.

04-07-2008	#4
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Re: New Time with Headers apples to apples & mods to mods for 2700ft. uncorrected altitude that time is stout, nuf said __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.

04-07-2008	#5
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: New Time with Headers Thanks guys. I like the term stout Ryan, that's cool. Needless to say I'm looking forward to the Gathering and some near sea level runs. I'm thinkin' 12.30's @ 118 will be possible based on what I picked up there last year. Whoopee, come on PNW Gathering. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

04-07-2008	#7
Polo-1 Join Date: Sep 2005 Location: Washington Posts: 955	Re: New Time with Headers dont make me use the spray Good runs. Where are you shifting @ with the headers?

04-07-2008	#9
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,698	Re: New Time with Headers Hammer, Put a scantool on the car during a run. See if there's any KR going on?

04-07-2008	#10
Polo-1 Join Date: Sep 2005 Location: Washington Posts: 955	Re: New Time with Headers If you still do not have port work, I think you will do better @ 64-6500 rpm.