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Search took 0.00 seconds. Search: Posts Made By: olescarb
Forum: Pontiac - Street 04-19-2014, 01:11 PM
Replies: 14
Views: 841
Posted By olescarb
Even the larger MSD GM style caps are not as well...

Even the larger MSD GM style caps are not as well vented as the original GM style caps mainly because the window that was used to adjust the points is sealed by a plastic door that fits much tighter...
Forum: Pontiac - Street 04-18-2014, 04:58 PM
Replies: 14
Views: 841
Posted By olescarb
Jim what we have done is drill a 1/4" hole thru...

Jim what we have done is drill a 1/4" hole thru the body opposite the pick up assembly to allow venting then we drill a 1/4" hole in the cap on the back side by the firewall (to help avoid water or...
Forum: Pontiac - Street 04-18-2014, 11:56 AM
Replies: 14
Views: 841
Posted By olescarb
The stock MSD vented cap has a vent that is very...

The stock MSD vented cap has a vent that is very restricted, if i remember correctly it is in the 0.060 range which is not enough venting plus the cap seals so well to the body that there is no easy...
Forum: Pontiac - Street 04-18-2014, 10:14 AM
Replies: 14
Views: 841
Posted By olescarb
The corrosion is caused by the ozone that is...

The corrosion is caused by the ozone that is created by the ignition spark and if you are using a MSD box you have 4 times as many sparks as a standard ignition. The cure we use is to drill a 1/4...
Forum: Pontiac - Street 03-11-2014, 12:04 PM
Replies: 22
Views: 616
Posted By olescarb
I very seldom post any replies on this and other...

I very seldom post any replies on this and other forums because they also seem to end up with one person attacking another for their ideas. Please just try and stick to ideas on how to fix problems,...
Forum: Pontiac - Street 03-10-2014, 12:43 PM
Replies: 22
Views: 616
Posted By olescarb
a 3.5 power valve comes in at lower vacuum a 6.5...

a 3.5 power valve comes in at lower vacuum a 6.5 comes in sooner. Most of the current production 4779 Holleys have the original design idle well sizes but if your carb has a tapered idle well you may...
Forum: Pontiac - Street 03-10-2014, 10:26 AM
Replies: 22
Views: 616
Posted By olescarb
Many of the later Holley carbs have a lean off...

Many of the later Holley carbs have a lean off idle problem that was caused by the idle well being too small for todays gasoline, the original design of a 750 double pumper used a idle well that was...
Forum: Pontiac - Street 11-04-2011, 06:03 PM
Replies: 20
Views: 787
Posted By olescarb
The spring on the pump assembly is the change...

The spring on the pump assembly is the change that is needed to make the pump more active.

Henry @ oles carb
Forum: Pontiac - Street 11-04-2011, 03:37 PM
Replies: 20
Views: 787
Posted By olescarb
Edelbrock does offer a accelerator pump with a...

Edelbrock does offer a accelerator pump with a stronger duration spring that may help, the Edelbrock part # is 1468. The spring is VERY stiff in my opinion so use a pump in the afb/avs clones with a...
Forum: Pontiac - Street 09-16-2011, 11:30 AM
Replies: 21
Views: 876
Posted By olescarb
2.2% CO is slightly rich at cruise but i wonder...

2.2% CO is slightly rich at cruise but i wonder if the smog pump or catalitic converter are doing thier job. Be sure the smog/air pump is working and then check the catalitic convertor, the easiest...
Forum: Pontiac - Street 02-03-2011, 11:23 PM
Replies: 56
Views: 1,526
Posted By olescarb
I assume that Holley calibrated thier chokes for...

I assume that Holley calibrated thier chokes for the cooling effect of the external air flow but Carter (electric choke thermoquad and BBD) , Rochester (electric choke monojet, 2GC & q-jet) , Asian...
Forum: Pontiac - Street 02-03-2011, 10:20 PM
Replies: 56
Views: 1,526
Posted By olescarb
I never have seen a electric choke Holley,...

I never have seen a electric choke Holley, Rochester (1bbl, 2bbl or Q-jet) or even any of the Japanese carbs that had an external choke break that also had vacuum to the choke housing in my 40 plus...
Forum: Pontiac - Street 02-03-2011, 04:03 PM
Replies: 56
Views: 1,526
Posted By olescarb
"I've never heard of vacuum being used to cool...

"I've never heard of vacuum being used to cool the choke housing, guess I'm getting an education here. I always thought the vacuum port on Holley carbs was to use the factory hot air supply to assist...
Forum: Pontiac - Street 06-02-2010, 09:57 PM
Replies: 8
Views: 587
Posted By olescarb
We have been using the garter spring (the spring...

We have been using the garter spring (the spring inside the pump cup) from the small bore (early center carbs) rochester 2bbls on the large bore (outer carbs & 66 or later center carbs) blue ethanol...
Forum: Pontiac - Street 05-26-2010, 10:48 PM
Replies: 36
Views: 747
Posted By olescarb
The off idle stumble problem you discribe could...

The off idle stumble problem you discribe could be caused by a lean air/fuel mixture.We have found that most of the aftermarket carter AFB & AVS clones are both lean off idle and have a accelerator...
Forum: Pontiac - Street 04-06-2010, 11:37 PM
Replies: 10
Views: 340
Posted By olescarb
Other than the lack of lead, the gasoline of...

Other than the lack of lead, the gasoline of today burns at a different rate than the leaded gasoline of years past plus the formulation of these modern blends of gasoline can cause the air/fuel...
Forum: Pontiac - Street 03-23-2010, 08:24 PM
Replies: 33
Views: 1,246
Posted By olescarb
A rich air/fuel mixture (exhaust with a high...

A rich air/fuel mixture (exhaust with a high CO/carbon monoxide content) really has no smell, the smell most people sense is unburnt hydrocarbons/HC which is unburned fuel. The high hydrocarbons in...
Forum: Pontiac - Street 12-21-2009, 05:33 PM
Replies: 11
Views: 492
Posted By olescarb
We are also finding that the duration spring...

We are also finding that the duration spring tension of the pump arms of the modern holley carbs is much weaker than the original tension that was used on the original Holley carbs that were built in...
Forum: Pontiac - Street 12-21-2009, 12:41 PM
Replies: 11
Views: 492
Posted By olescarb
We have found that the accelerator pump duration...

We have found that the accelerator pump duration spring on the aftermarket clone afb and avs carbs are quite a bit weaker than the original units that Carter used when they were making the carbs...
Forum: Pontiac - Street 12-11-2008, 12:20 PM
Replies: 22
Views: 1,546
Posted By olescarb
I have been seeing a lot of lean off idle...

I have been seeing a lot of lean off idle problems with Holley style carbs, I have solved the problem on the cars i have seen by enlarging the idle well in the primary metering block. the original...
Forum: Pontiac - Street 03-31-2008, 10:50 AM
Replies: 53
Views: 2,877
Posted By olescarb
no special tricks but you do have to remove the...

no special tricks but you do have to remove the pump arm off the carb top first
Forum: Pontiac - Street 03-25-2008, 02:58 PM
Replies: 55
Views: 3,498
Posted By olescarb
If the engine idled fine before you added the...

If the engine idled fine before you added the fuel line return, yes that change could lean out the idle system because the change could lower the fuel pressure at idle which would lower the fuel...
Forum: Pontiac - Street 03-17-2008, 06:06 PM
Replies: 29
Views: 764
Posted By olescarb
I would first check the fuel tank vent system to...

I would first check the fuel tank vent system to be sure it is open. If your year vented theu the gas cap, the vent in a vented gas cap is in the 0.080" range which would cause a vacuum to build up...
Forum: Pontiac - Street 03-14-2008, 10:53 AM
Replies: 53
Views: 2,877
Posted By olescarb
A book is best left to the writers like Cliff,...

A book is best left to the writers like Cliff, who can cover the whole subject.

Maybe someday if i am lucky, i will have the privilage to work with someone like Cliff on a tuning "book"
...
Forum: Pontiac - Street 03-11-2008, 12:08 PM
Replies: 7
Views: 496
Posted By olescarb
A 4-hole spacer can also help make up for...

A 4-hole spacer can also help make up for something in the intake tract being larger than optimal (too large of a carburetor, cam, intake, etc.)

If you are refering to the word tract, intake...
Showing results 1 to 25 of 31
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