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Search found 842 matches

by MELWAY
Mon Feb 03, 2020 7:40 pm
Forum: Engine Tech
Topic: Victor on small cu. SBC
Replies: 13
Views: 695

Re: Victor on small cu. SBC

How much power? What size heads ?

Most small block 23 deg stuff under 400” I have done goes way better with 4150 intakes and carbs
by MELWAY
Mon Feb 03, 2020 2:17 pm
Forum: Engine Tech
Topic: Best oil for 6.7 Cummins
Replies: 21
Views: 615

Re: Best oil for 6.7 Cummins

Does your EGR valve work as per factory or has it mysteriously been blocked up with a "blank gasket" :lol: ? No I was told that will throw fault codes. It’s an Isuzu Dmax I had ecu re mapped they told me it will reduce EGR activity but NOT eliminate it. I’m all ears if you know ways around it Ah , ...
by MELWAY
Mon Feb 03, 2020 3:00 am
Forum: Engine Tech
Topic: Best oil for 6.7 Cummins
Replies: 21
Views: 615

Re: Best oil for 6.7 Cummins

Wow. Thanks Graig. Interesting I have been using delvac MX or Cat DEO in my light common rail engines. But I change it at 8000km. I hate black oil. Lol and it’s cheap Does your EGR valve work as per factory or has it mysteriously been blocked up with a "blank gasket" :lol: ? No I was told that will...
by MELWAY
Mon Feb 03, 2020 12:59 am
Forum: Engine Tech
Topic: Contact at comp cams
Replies: 48
Views: 2079

Re: Contact at comp cams

Is Dean Harvey still at COMP
by MELWAY
Mon Feb 03, 2020 12:52 am
Forum: Engine Tech
Topic: Best oil for 6.7 Cummins
Replies: 21
Views: 615

Re: Best oil for 6.7 Cummins

Wow. Thanks Graig. Interesting

I have been using delvac MX or Cat DEO in my light common rail engines. But I change it at 8000km. I hate black oil. Lol and it’s cheap
by MELWAY
Sun Feb 02, 2020 4:07 pm
Forum: Engine Tech
Topic: Best oil for 6.7 Cummins
Replies: 21
Views: 615

Re: Best oil for 6.7 Cummins

I have had better results in my big diesels with Delvac...better oil samples with higher TBN numbers after a 50,000 mile oil change interval. Lucas and Schaeffer are very good, too. Rotella always fell short. Are you referring to delvac 1 full synthetic? 50000 is a long time for oil to be in an eng...
by MELWAY
Thu Jan 30, 2020 8:10 pm
Forum: Engine Tech
Topic: Best oil for 6.7 Cummins
Replies: 21
Views: 615

Re: Best oil for 6.7 Cummins

What oil change intervals are you guys at with these diesels
by MELWAY
Wed Jan 29, 2020 6:27 pm
Forum: Engine Tech
Topic: Rod bearing wear
Replies: 16
Views: 660

Re: Rod bearing wear

I have seen similar wear patterns with some cheap Chinese cranks that may have had excess polishing to cover up a poor ground finish that is not flat.
Your bearing does not look to be that bad. But maybe have pins precision ground next rebuild
by MELWAY
Thu Dec 19, 2019 8:27 pm
Forum: Engine Tech
Topic: Gasser Cam
Replies: 12
Views: 1110

Re: Gasser Cam

Over the years I have run many sets of Isky plus springs with flat tappets over 7000rpm. And a lot are miles from coil bind .150” or more. And I have never had any issues My thoughts were maybe the limited velocity of the flat tappet design didn’t worry or upset the spring even when it’s set up a lo...
by MELWAY
Sat Nov 30, 2019 5:04 am
Forum: Engine Tech
Topic: Lash ramps for solid cams
Replies: 17
Views: 1013

Lash ramps for solid cams

Let’s talk about different ramp designs for solid cams A lot of people talk about tightening lash right down to help solid roller lifter life on rollers cams for street use I have heard that there are different designs in how the lash ramps can work. Constant velocity etc. I know for example the old...
by MELWAY
Mon Nov 25, 2019 6:04 pm
Forum: Engine Tech
Topic: when are 3/4 grooved main bearings needed for bbc ?
Replies: 275
Views: 9359

Re: when are 3/4 grooved main bearings needed for bbc ?

Warp, there has to be a feed hole in the block that lines up with the oil feed hole in the main journal. That needs to happen at about 70 degrees ATDC. You can't move the oil hole in the crank very much. So the feed hole in the block needs to be in a location so that the feed hole in the block line...
by MELWAY
Wed Nov 20, 2019 9:32 pm
Forum: Engine Tech
Topic: when are 3/4 grooved main bearings needed for bbc ?
Replies: 275
Views: 9359

Re: when are 3/4 grooved main bearings needed for bbc ?

In what case would a full groove be warranted, and how is it gonna fix a poor design? What oil "timing issue" is it going to fix? Ever played with stock ford cleveland cranks? Why the hell would I, or anyone for that matter really?!? :lol: You can always fit this type of thing to some inefficient p...
by MELWAY
Wed Nov 20, 2019 8:31 pm
Forum: Engine Tech
Topic: when are 3/4 grooved main bearings needed for bbc ?
Replies: 275
Views: 9359

Re: when are 3/4 grooved main bearings needed for bbc ?

Warp Speed wrote:
Wed Nov 20, 2019 6:18 pm
In what case would a full groove be warranted, and how is it gonna fix a poor design?
What oil "timing issue" is it going to fix?
Ever played with stock ford cleveland cranks?
by MELWAY
Tue Oct 15, 2019 9:34 pm
Forum: Engine Tech
Topic: Dual pattern cams in towing applications
Replies: 23
Views: 1570

Re: Dual pattern cams in towing applications

Increasing the exhaust duration can reduce temp in the cylinder, but will also reduce pressure, and power at lower RPM's. For a towing application, where power below peak is more important then power past peak, increasing the exhaust duration is the wrong way to go. If the engine has to pass a smog...
by MELWAY
Mon Oct 07, 2019 5:27 am
Forum: Engine Tech
Topic: bbc oil pump on sbc iron eagle 434
Replies: 16
Views: 890

Re: bbc oil pump on sbc iron eagle 434

The bbc pump is standard volume and the sbc pump is hi volume. The bbc pump comes with 3 springs 50-60lbs, 60-70lbs, and 70-80lbs. assume 8000 maximum rpm, 55mm babbit cam bores, 904 lifter bores, 0.0024 mains and 0.0028 rods, 12an remote filter and lines and accusump. Have not been able to find a ...