CORRECTION

In last months Newsletter we listed the results from testing performed by Richardson Auto Machine in Lynchburg, VA USA, on their in house Dyno in conjunction with Tech Line coatings as applied by BCD Coatings, in Pulaski, TN. More information can be found at http://www.bcdcoatings.com . This was erroneously listed as a test performed by Sartor Bros. Engineering in South Africa. We regret the confusion.

NEW PHONE NUMBERS FOR ORDERING!

Tech Line will be moving its sales order phone lines to our California location. Blending and Shipping will continue from the Midlothian Texas location. During the transition and training period orders may be placed with either the Texas facility or The California facility. The California number is 1-951-304-0498. Fax is 1-951-461-9658. This will take about 2 months to complete due to the need to train new employees at both facilities and because of vacations that employees have scheduled during this time period.

Dyno Test

From Sartor Bros. in South Africa.

A test was performed in South Africa to see to what extent header coatings could reduce the surface temperatures on stock exhaust manifolds . The test was to see if the coatings would allow the vehicles to meet or be exempt from Regulation 10.25.2(b) of the Mine Health and Safety Act of 1996. A Toyota 2 ton truck running a 2L: diesel was to be used. Sartor Bros coated the test engines manifolds with Tech Line coating products.

TIt is necessary to reduce the surface temperatures as there is a significant danger of igniting gases when the equipment is use, in these huge underground mines. The test was conducted at Twistdraai Central Colliery.

The Results were as follows:

The maximum temperature of the manifold( at the exhaust flange) was 166C. ( Previously recorded 238C). This was at the steepest incline of the mine. The highest temperature on level ground was 142C. The highest exhaust branch outlet temperature was 129C.

If you convert to Fahrenheit, the drop was from 460f to 330f. Since the uncoated temperature was high enough to cause ignition of the gases this reduction is significant and would potentially allow the use of these engines in the mines.

CBC2/CBX and Compression Ratios. We are regularly asked how much additional compression can be run when one of Tech Line’s thermal barrier coatings are used on piston tops. Since the coating changes the efficiency of the combustion chamber and reduces the likelihood of entering into detonation, it is possible to run more compression.

Since there are so many variables we cannot give an absolute figure. However in general you can run 1 point more in compression. We have had reports over the years that 10.5 to 10.75 is possible. It should be noted that in one instance a 302 Ford engine was built that had 12 to 1 compression and was able to be driven and raced on pump gas. One of our own employees ran a 302 Chevy engine, with a nice street cam with a nominal 12 to 1 compression and he regularly drove it to work on pump gas with no problems.

FOXFIRE COATINGS

Charlotte , NC
Danny Ross

Danny tells us that a major Busch team has been working with them on coated headers and heat shield to reduce under hood temperatures. This is of special concern on the truck series vehicles. Danny said that he uses HHBK top coated with Black Satin.

The results have been a better than expected. The carb air inlet temperature dropped 18 degrees. The formula for power gains in air inlet temperature drops is; for every 10 degree drop, efficiency goes up 1%, on normally aspirated engines. On these engines, that would be over 12 H.P. This benefit applies over the entire RPM band not just at peak power.

NATIONAL RECORD SET

From Holton Automotive
Modesto, Calif.
Producers of Holton Super Stock Hemi’s

A new National Record in SS /A Automatic was just set at Boise Raceway. The Hemi went 8.71 at 151 mph (corrected for altitude). The car has actually gone quicker at Mission Drag Way in B.C. Canada where Harry Holton turned 8.68 at 151.10 mph, AT SEA LEVEL. NHRA says this was the quickest SS run in history. The car is a 68 Hemi Barracuda, running Tech Line coated pistons.

Send e-mail to the editor: Leonard Warren