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Search found 511 matches

by rebelrouser
Thu Jun 03, 2021 9:18 am
Forum: Engine Tech
Topic: Sbc leakdown test reveals leak to ARP studs threads
Replies: 22
Views: 1187

Re: Sbc leakdown test reveals leak to ARP studs threads

Good evening everyone, I really do appreciate all of your replies. I have NOT discovered any pressure from the cylinder leakdown test entering the cooling system of this engine during this test. I do appreciate the insight about the sealing options Tuner and others have mentioned in their replies a...
by rebelrouser
Wed Jun 02, 2021 9:44 pm
Forum: Engine Tech
Topic: Lifter body Diameter options
Replies: 3
Views: 360

Re: Lifter body Diameter options

About ten years ago, I had a student in engines class that wanted to overhaul his 454 truck engine. It was a previous Jasper reman engine, had tags on it. He pulled it apart and it had oversize lifters and bores. I called Jasper and they said yes they still oversized lifter bores and they had the li...
by rebelrouser
Tue Jun 01, 2021 9:45 am
Forum: Engine Tech
Topic: Sbc leakdown test reveals leak to ARP studs threads
Replies: 22
Views: 1187

Re: Sbc leakdown test reveals leak to ARP studs threads

Either way the heads need to come off the block needs to be checked. First check the gasket,check block for cracks, and see if the block has blind bolt holes are not. One thing I will point out, when using water glass, READ the directions, no antifreeze in the engine when sealing the leak. I have h...
by rebelrouser
Mon May 31, 2021 8:15 pm
Forum: Engine Tech
Topic: Sbc leakdown test reveals leak to ARP studs threads
Replies: 22
Views: 1187

Re: Sbc leakdown test reveals leak to ARP studs threads

I have seen this issue, crack in the block from the head bolt hole. On one mud truck we used water glass to fix it, and it ran for several seasons. The engine ran great no issues, just leaked it down at the end of the season to see if it needed any attention. Had one cylinder with a crack in the blo...
by rebelrouser
Wed May 26, 2021 11:05 pm
Forum: Engine Tech
Topic: 83' C30 6.2L diesel
Replies: 11
Views: 342

Re: 83' C30 6.2L diesel

I worked at a Chevy dealer when the first old's based diesels came out. GM told us that they were switching to diesel from gas to get around emissions regulations. Every model that year had a diesel option. Most were junk and to my memory none had turbo's The only one I really liked was the Chevette...
by rebelrouser
Tue May 25, 2021 9:03 am
Forum: Engine Tech
Topic: Chassis dyno losses - please critique my thinking.
Replies: 24
Views: 1008

Re: Chassis dyno losses - please critique my thinking.

What little I messed with a chassis dyno, the rollers are the main issue, how you load the vehicle and the rate at which you load it really affects slippage on the dyno. At the college where I taught we had a good Mustang chassis dyno, so many times I had different students running the same pulls on...
by rebelrouser
Sun May 23, 2021 9:53 am
Forum: Engine Tech
Topic: Anyone out there using the BM alu Hemi block
Replies: 17
Views: 642

Re: Anyone out there using the BM alu Hemi block

Been using a Bill Miller aluminum wedge block for 10 years, changed displacement three times, blew it up once. Been very dependable, even after the repair from the rod going through the side of it. When I bought it new, had it bored to fit a rotating assemble from an iron block that had cracks, hone...
by rebelrouser
Thu May 20, 2021 10:42 pm
Forum: Engine Tech
Topic: When does a Centrifugal blower need a blow-off valve?
Replies: 9
Views: 660

Re: When does a Centrifugal blower need a blow-off valve?

Not an expert, only built one procharger 410 chrysler LA engine for the street. The way I understand it is that you need a blow off valve to control boost, and too control pressure when you back off the throttle. If you are at WOT and you let off the pedal, the engine is still spinning and making bo...
by rebelrouser
Wed May 19, 2021 8:32 am
Forum: Engine Tech
Topic: What happened to Controlled Induction software?
Replies: 14
Views: 2244

Re: What happened to Controlled Induction software?

Just look at Engine Analyzer. That program has been around for along time. They came up with the idea, did the math and made it happen. That program allows you to run cam simulations to try and find the best profile for your engine combo. I don't know how accurate it is, but maybe it's already a pr...
by rebelrouser
Wed May 12, 2021 3:00 pm
Forum: Engine Tech
Topic: LS oiling problem
Replies: 15
Views: 989

Re: LS oiling problem

I am going to ask some advice on the LS oil pump. Got the replacement today it is a sealed power pump, which always was a name brand. I took it apart to check it and I get .005 rotor to bore clearance. I have a factory LS overhaul manual and they give no oil pump clearance specs, the text just says ...
by rebelrouser
Tue May 11, 2021 10:00 am
Forum: Engine Tech
Topic: Head heating required when changing bronze valve guides?
Replies: 9
Views: 731

Re: Head heating required when changing bronze valve guides?

Not an expert by any means, but it depends on how easy they come out. I have a guide tool that fits an air hammer, if I blurp it and the guides move then I take them out cold. If they are stubborn, then I warm the head up a little. Freeze the guides overnight, and warm the head a little to install. ...
by rebelrouser
Mon May 10, 2021 6:43 pm
Forum: Engine Tech
Topic: 95 RON standardized as new high octane?
Replies: 45
Views: 1448

Re: 95 RON standardized as new high octane?

Fuel with ethanol in it INCREASES FUEL CONSUMPTION. you have to buy MORE OF IT. Vehicles that operate on 91 octane gas are no more fuel efficient than 87 octane fuel cars, If the 91 octane has ethanol in it, the fuel consumption per mile is HIGHER. That means you buy more. "performance" has nothing...
by rebelrouser
Mon May 10, 2021 6:28 pm
Forum: Engine Tech
Topic: LS oiling problem
Replies: 15
Views: 989

Re: LS oiling problem

For those who answered my post, the issue was a small sliver of aluminum in the pressure relief valve. It appears that the outer bore is a little too tight, as the outer pump gear is stuck in the bore, I had to tap it out with hammer and punch. It looks like the bore is where the metal came from. I ...
by rebelrouser
Mon May 10, 2021 8:22 am
Forum: Engine Tech
Topic: Question for those who build and sell engines
Replies: 36
Views: 1619

Re: Question for those who build and sell engines

There was 2 pages of details for the shop to follow but again the owner of the boat was trying to get insurance to cover a previously diagnosed issue for free by using 2 shops against a 3rd unknown guy. While its the same old deal name every one in your law suit and then sit and wait. This happens ...
by rebelrouser
Thu May 06, 2021 9:54 pm
Forum: Engine Tech
Topic: Question for those who build and sell engines
Replies: 36
Views: 1619

Re: Question for those who build and sell engines

I been fixing cars since 1974, worked at a dealer, owned my own shop, and worked for a shop. Also taught at a Tech School and we did live work with the students. In all those times I went to court twice, and won both cases. First my tickets in my shop plainly state high performance work by it's very...