HEI Rebuild and Recurve
June 15th, 2016, 12:10 PM
#1
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Join Date: Oct 2015
Posts: 234
HEI Rebuild and Recurve
A while back I used a company that would take on older HEI distrbutor and rebuild and recurve for street performance. Send them the distributor and they would set it up for you in accordance with your build and needs. I seem to have lost the contact info.
Does anyone know of an outfit like this?
Thank you.
Does anyone know of an outfit like this?
Thank you.
July 14th, 2016, 06:06 AM
#4
I do about 1500 a year, been in business 10 years, playing with distributors on and off for 30 years. 12 Sun distributor testers and 1 Snap-On tester on hand plus a full machine shop to build and modify parts when necessary.
AdvancedDistributors.com 612-804-5543
And I just bought a '68 Cutlass S Convertible last night. I'll be around here a lot...
AdvancedDistributors.com 612-804-5543
And I just bought a '68 Cutlass S Convertible last night. I'll be around here a lot...
July 14th, 2016, 04:12 PM
#6
I'm not here to sell, rather to teach and help where i can while I also gain info as a Cutlass owner.
Delco distributor recurves are NOT done by changing the springs and weights. Leave the weights alone - they are the only constant you have to work with. The cam between the weights is changed in both shape and depth of profile to speed or slow advance through out the curve. Then you need to limit advance, as today's fuel needs more initial advance (low rpm), and nearly identical top-end advance as stock. This is done by welding on the slot which allows and ends the advance. By welding the correct amount on the "idle side" of the hole and the "top end" side of the hole, you can correct phasing issues (relationship between the cap and rotor when it fires) as well as make for a more stable idle.
What's the perfect curve? It depends on your specific engine. Displacement, cylinder pressures, compression ratio, carburetion, camshaft duration and lift, etc...
This is what I do daily and have done daily for more than a decade, with hands-on experience and research going back 30 years.
With that said, I'll answer questions openly, but I don't talk prices or make sales on this or any forum. If you want more info, please ask or visit advanceddistributors.com
Delco distributor recurves are NOT done by changing the springs and weights. Leave the weights alone - they are the only constant you have to work with. The cam between the weights is changed in both shape and depth of profile to speed or slow advance through out the curve. Then you need to limit advance, as today's fuel needs more initial advance (low rpm), and nearly identical top-end advance as stock. This is done by welding on the slot which allows and ends the advance. By welding the correct amount on the "idle side" of the hole and the "top end" side of the hole, you can correct phasing issues (relationship between the cap and rotor when it fires) as well as make for a more stable idle.
What's the perfect curve? It depends on your specific engine. Displacement, cylinder pressures, compression ratio, carburetion, camshaft duration and lift, etc...
This is what I do daily and have done daily for more than a decade, with hands-on experience and research going back 30 years.
With that said, I'll answer questions openly, but I don't talk prices or make sales on this or any forum. If you want more info, please ask or visit advanceddistributors.com
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