Don Terrill’s Speed-Talk

Any benefits to plugging this on a street engine with a stock roller 350 block? Obviously warm up would have to be done properly every time, and routine maintenance would have to be consistent with filter changes. Hate the idea of oil bypassing the filter at all, even a remote mounted setup with a c...

Sort of off topic, but same thinking.... For context.. A lot of the higher hp 2 strokes released by yamaha and Kawasaki around 1999-2004 were 1200 cc, 155 hp triples. Made peak power at about 7500 rpm. They had nickel silicone carbide (Nikasil) plated aluminum cylinders. Always wondered why the big ...

bill jones: Thank you! enigma57: Does AFR sell any heads for less money than the free '113s I already own? They have the angle plug enforcer heads, 64cc chambers, 195 ish runners as cast. For 500 per head when you consider all the work, valves are 8MM, good springs.. a grand for a set looks pretty ...

No pun intended, just pointing out that there are some reputable shops doing work on these castings, by hand, as well as cnc. Iron may be expensive to port, but if you already have it? It is certainly an option to consider. Hvh has a cnc program for those heads, Speier does iron by hand. If you are ...

Hvh has a cnc program for those heads, Speier does iron by hand. If you are not familiar with eithers reputation? Good luck trying to find someone to port an IRON head nowadays. Nobody is going to put it on their CNC machine, that's for sure. Would need a completely different program, compared an al...

Hvh has a Cnc profile for those castings. See what they can do for you, add their response to your list of options before making a decision. You may want to talk to Speier about your options too. I think he still sports iron, if you want higher rpm you can go to lighter 8mm valves etc. Question come...

We've been using nordlock washers on our stamping presses at the shop for about 20 months, cuts out the weekly torque checks, just by switching we've been able to go to a monthly torque check. And some of these bolts are over 300 ft lbs.. they work great, tried to get the boss to go to safety wires ...

Is this the tre racing that does a lot of online sales?

Kept having issues with purchasing item/service so he encouraged me to send money as a friend. (First sign of trouble, but I was such a trusting soul!) By sending money to a friend versus as a payment for goods and services you have zero recourse, paypal nor your bank will succeed, I have been down...

From my limited knowledge and experience All I have read and experience leads me to believe the same. About mpfi, vs tbi. I do find it interesting how blow through setups be it tbi or carbed, can get away with higher cylinder pressures and no intercooler by staying with a wet flow manifold though. L...

Thanks guys, sorry for asking so many novice questions, just trying to expand my knowledge base.

Was referring to the newer Holley TBI setups that flow 950, and have 4 large flow injectors specifically, not the old low pressure systems.

Single plane with 8 injectors, or 4bbl tbi?

Who among our hotpass vendors is a Holley efi dealer. I have some very specific questions in regard to an older 550-406 unit. It has the very small LCD controller. And I will be doing some updates. Do not want to make any redundant purchases or spend on things I do not need.

What are the formulas for figuring out valve timing when armed only with @ 0.050, lsa and icl?

Figure you guys will have the simplest way for a math challenged idiot like me??