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Search found 301 matches

by rebelrouser
Sun Jul 12, 2020 12:37 pm
Forum: Engine Tech
Topic: Speed pro power forged piston clearance .001!!!
Replies: 18
Views: 483

Re: Speed pro power forged piston clearance .001!!!

I think this would be worth a phone call to Speed Pro. I am seeing a trend that piston clearances are getting tighter in a lot of engine combinations. It gets on my nerves pressing buttons trying to actually talk to a real person, but many times it is worth the trouble. The machinist that does my bl...
by rebelrouser
Sat Jul 11, 2020 10:01 am
Forum: Engine Tech
Topic: ? intake mounting may affect crank bore alignment ?
Replies: 17
Views: 454

Re: ? intake mounting may affect crank bore alignment ?

When Ford released the Modular V-8's they soon released a training video on how to use a torque wrench, and how torque to yield bolts functioned. I used this training video in my classes for many years. On the Ford if you do not follow the torque sequence exactly when installing the main caps and ja...
by rebelrouser
Sat Jul 11, 2020 9:00 am
Forum: Engine Tech
Topic: Best power steering fluid to quiet fussy pump
Replies: 4
Views: 286

Re: Best power steering fluid to quiet fussy pump

Lucas oil power steering stop leak fluid, it does wonders. Never seen it really stop a leak, but it is nice and thick and makes them quiet.
by rebelrouser
Fri Jul 10, 2020 9:30 am
Forum: Engine Tech
Topic: Shortening valve springs
Replies: 10
Views: 521

Re: Shortening valve springs

Not an expert, but shortening a spring to get it to fit an application would be my last resort, and I personally would not attempt it. And that is from a guy who has taken used push rods, removed the ends cut them and repressed the tips to make them work, just one example. With the thousands of spri...
by rebelrouser
Fri Jul 10, 2020 9:19 am
Forum: Engine Tech
Topic: What is the quality of the current Chinese imports?
Replies: 62
Views: 6461

Re: What is the quality of the current Chinese imports?

I would say the majority of my customers have limited resources, they are all looking for the biggest bang for the buck. I do no circle track stuff, over the years it's been boat engines, muscle car restorations, drag racers, mud racers, mini rod tractors, and pulling trucks. Most of the engines hav...
by rebelrouser
Thu Jul 09, 2020 9:37 pm
Forum: Engine Tech
Topic: ? intake mounting may affect crank bore alignment ?
Replies: 17
Views: 454

Re: ? intake mounting may affect crank bore alignment ?

This is part of a real GM service bulletin. When they changed the bolts on the intake from angled to vertical, is when the issue started. I remember this bulletin first being published for V-6 engines. I remember because I used this bulletin in a power point presentation for my students to scare the...
by rebelrouser
Thu Jul 09, 2020 4:51 pm
Forum: Engine Tech
Topic: Gen 1 SBC oil filter bypass
Replies: 22
Views: 684

Re: Gen 1 SBC oil filter bypass

I don't want to start a war, but why would you want to block the pressure relief valve? I have seen it done a bunch on SBC, and BBC engines ? I always put it back to a pressure relief valve when I work on one. I agree all the oil has to go through the filter when you block it, but on cold startup, f...
by rebelrouser
Thu Jul 09, 2020 10:03 am
Forum: Engine Tech
Topic: Homemade Engine Dyno
Replies: 57
Views: 1936

Re: Homemade Engine Dyno

i bought a go power water brake a cooling tower and run stand for $3500 over 20 years ago. I then bought a harrison engineering data aquisition system for another $3500. I use outdoor cattle water containers for brake water with a transfer pump to keep the hot brake water flowing downhill. I have m...
by rebelrouser
Thu Jul 09, 2020 9:54 am
Forum: Engine Tech
Topic: Indexing spark plugs
Replies: 23
Views: 741

Re: Indexing spark plugs

When I taught my class on performance engine tuning, we had two identical 350 SBC mule engines about 340HP. I had my students index spark plugs, used plugs to new plugs, many times and we did not see any HP increase. We had a Eddy current dyno and it was very repeatable.
by rebelrouser
Tue Jul 07, 2020 5:39 pm
Forum: Engine Tech
Topic: measuring JE coated pistons
Replies: 15
Views: 529

measuring JE coated pistons

Putting together a 4.6 bore big block Chevy with JE nitrous pistons. They have coated skirts with two small windows to measure the skirt diameter. This video from JE, shows a special micrometer they recommend to use for measurement. https://www.youtube.com/watch?v=QMkMPL48Z3M My standard outside mic...
by rebelrouser
Mon Jul 06, 2020 4:27 pm
Forum: Engine Tech
Topic: Valve job with stones
Replies: 29
Views: 1003

Re: Valve job with stones

I want to see where the seat hits the valve. I sometimes use fine lapping compound just to see where it marks the valve. Stock engines I want in the center, performance I want a little to the outer edge. Many times you can simply take your hand and rap the valve sharply against the seat with your fi...
by rebelrouser
Mon Jul 06, 2020 3:44 pm
Forum: Engine Tech
Topic: Installing damper with hammer
Replies: 61
Views: 1929

Re: Installing damper with hammer

If you have the engine on a stand, simply drive a wooden wedge between the crank flange and engine stand plate, then you can tap it on, without damaging the thrust. BUT like someone said why not just drill and tap the crank then use a common balancer installer. My issues have been with aftermarket r...
by rebelrouser
Sat Jul 04, 2020 7:43 pm
Forum: Engine Tech
Topic: Homemade Engine Dyno
Replies: 57
Views: 1936

Re: Homemade Engine Dyno

just want to say that I am very impressed,is this your own home dyno or a business,very innovative and the price is great,how do you find the repeatability ?? I use performance trends software on my flowbench with good results. I am semi retired, the dyno is something I just always wanted, I piddle...
by rebelrouser
Sat Jul 04, 2020 7:30 pm
Forum: Engine Tech
Topic: Valve job with stones
Replies: 29
Views: 1003

Re: Valve job with stones

I prefer stones. First stones like any other abrasive come in different grits and materials, if you have a rough texture on the seat, the speed of the stone and the proper grit for the seat material is important to get the right finish. I have always had a valve and seat grinder in my repair shop s...
by rebelrouser
Sat Jul 04, 2020 10:02 am
Forum: Engine Tech
Topic: Homemade Engine Dyno
Replies: 57
Views: 1936

Re: Homemade Engine Dyno

I guess what you mean by a DIY dyno? I purchased a pile of parts from a machine shop and built my own dyno. The waterbrake is a land and sea 13 inch. and the docking cart is homemade. I used Performance Trends data and computer software. Water pump came with the parts I bought, water tank, sump, and...