'67 Camaro E/SA redo

HandOverFist · 07-06-2014, 06:21 AM

4:00 am Sunday morning...just got home from a TNT at Bowling Green. I learned a valuable lesson this evening...I totally suck at building Q-jets. I can take a good one and tune on it, but just can't get one of my own to go down track.

Here is the first pass with the original carb that I had leaned considerably...

The car left strong and ran well down track...first time in a long while it has been in the 1.40 range in 60' times. The mph was down from the normal 113...I assumed it may have been a little too lean.

The next three runs were with my versions of a '67, Edelbrock, and a Q-jet aptly named "Morphadite" in that order...all total failures to say the least.

Stock racer Brian Rogers just happened to be at the track last night and he stopped by in staging. He looked the car over well and found nothing totally amiss. We talked a bit and he said he would come over to my pit space after my run to tinker with a carb. After picking my brains for a bit we decided to try an even leaner secondary rod in the original carb that he had run years before he went to a 302 stick shift.

The car felt good from start to finish, but I felt it may have been too lean for the conditions. We made a slightly richer rod change for the final pass of the night and it responded well. I believe I will take Brian's advice about leaving the carb alone for now until I can try someone's known good running carb for comparison. This way I will know if we need to be looking elsewhere for gains or not.

In the two weeks before the upcoming two day Combo race we will do a compression/leak down test on all cylinders just to verify no motor problems. The final two timeslips and with that I'm off to bed.

ZASKO · 07-06-2014, 06:38 PM

th,is carb man Jimmy Zasko, e/sa d/sa send me that carb and I will perform the magic, or call me 616 734 4188

HandOverFist · 07-06-2014, 09:24 PM

Quote:

Originally Posted by ZASKO

th,is carb man Jimmy Zasko, e/sa d/sa send me that carb and I will perform the magic, or call me 616 734 4188

Thanks - The one carb is good to go...it's just the ones I built that suck.

HandOverFist · 07-09-2014, 01:25 PM

Making some minor changes before the Combo meet. The header collectors currently on the car may be a tad short and due to the megaphoned style made it difficult to use extensions...

I'm going to swap them out for a straight version and play with the length. Will also hook up the wide band O2 I have been meaning to try...

Came up with the idea of cutting one of the lowering blocks on each side of the rear housing to simulate the previously used 2 degree pinion wedges. I think the car liked the extra pinion angle and this will get the job done without having an extra piece floating around in the mix while ensuring positive pin engagement.

tommy d · 07-10-2014, 05:10 AM

Dig the "MARVY" barber pole! I've had a few over the years.

brent flynn · 07-10-2014, 11:37 PM

Keep us posted.. hope you have a good weekend...

Im gettin ready for Columbus... probably goin in at .3 to .35 under ,, but, i dont care...hehe half the fun is gettin there, right?

HandOverFist · 07-12-2014, 12:13 AM

Here is a shot of the lowering blocks I had machined for a 2 degree wedge...sitting at 4 degrees pinion angle now.

Before and after shots of the collector/extensions...

Finally rounded up some blocks so I could more easily slip under the car to take measurements. Next set of slicks will be 94" in place of the current 92.5".

07-06-2014, 06:21 AM	#1
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	Re: '67 Camaro E/SA redo 4:00 am Sunday morning...just got home from a TNT at Bowling Green. I learned a valuable lesson this evening...I totally suck at building Q-jets. I can take a good one and tune on it, but just can't get one of my own to go down track. Here is the first pass with the original carb that I had leaned considerably... The car left strong and ran well down track...first time in a long while it has been in the 1.40 range in 60' times. The mph was down from the normal 113...I assumed it may have been a little too lean. The next three runs were with my versions of a '67, Edelbrock, and a Q-jet aptly named "Morphadite" in that order...all total failures to say the least. Stock racer Brian Rogers just happened to be at the track last night and he stopped by in staging. He looked the car over well and found nothing totally amiss. We talked a bit and he said he would come over to my pit space after my run to tinker with a carb. After picking my brains for a bit we decided to try an even leaner secondary rod in the original carb that he had run years before he went to a 302 stick shift. The car felt good from start to finish, but I felt it may have been too lean for the conditions. We made a slightly richer rod change for the final pass of the night and it responded well. I believe I will take Brian's advice about leaving the carb alone for now until I can try someone's known good running carb for comparison. This way I will know if we need to be looking elsewhere for gains or not. In the two weeks before the upcoming two day Combo race we will do a compression/leak down test on all cylinders just to verify no motor problems. The final two timeslips and with that I'm off to bed. __________________ Rich Taylor I/SA - 321

07-06-2014, 06:38 PM	#2
ZASKO Junior Member Join Date: Nov 2006 Posts: 78 Likes: 0 Liked 0 Times in 0 Posts	Re: '67 Camaro E/SA redo th,is carb man Jimmy Zasko, e/sa d/sa send me that carb and I will perform the magic, or call me 616 734 4188

07-09-2014, 01:25 PM	#4
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	Re: '67 Camaro E/SA redo Making some minor changes before the Combo meet. The header collectors currently on the car may be a tad short and due to the megaphoned style made it difficult to use extensions... I'm going to swap them out for a straight version and play with the length. Will also hook up the wide band O2 I have been meaning to try... Came up with the idea of cutting one of the lowering blocks on each side of the rear housing to simulate the previously used 2 degree pinion wedges. I think the car liked the extra pinion angle and this will get the job done without having an extra piece floating around in the mix while ensuring positive pin engagement. __________________ Rich Taylor I/SA - 321

07-10-2014, 05:10 AM	#5
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 830 Likes: 1,625 Liked 359 Times in 135 Posts	Re: '67 Camaro E/SA redo Dig the "MARVY" barber pole! I've had a few over the years. __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?

07-10-2014, 11:37 PM	#6
brent flynn Senior Member Join Date: Apr 2011 Location: Middletown, IN Posts: 593 Likes: 0 Liked 0 Times in 0 Posts	Re: '67 Camaro E/SA redo Keep us posted.. hope you have a good weekend... Im gettin ready for Columbus... probably goin in at .3 to .35 under ,, but, i dont care...hehe half the fun is gettin there, right? __________________ 1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA

07-12-2014, 12:13 AM	#7
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	Re: '67 Camaro E/SA redo Here is a shot of the lowering blocks I had machined for a 2 degree wedge...sitting at 4 degrees pinion angle now. Before and after shots of the collector/extensions... Finally rounded up some blocks so I could more easily slip under the car to take measurements. Next set of slicks will be 94" in place of the current 92.5". __________________ Rich Taylor I/SA - 321

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