We are currently running on the new domain and server: www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Search found 2893 matches

by mag2555
Wed Jan 22, 2020 12:10 pm
Forum: Engine Tech
Topic: Compression
Replies: 44
Views: 1434

Re: Compression

My line of thought and questioning was in regards poor combustion due to the piston dome, as the combustion process can be very different from a boosted motor running at + 2 or more Atmospheres and NA motor with 17 to 1.
by mag2555
Wed Jan 22, 2020 6:16 am
Forum: Engine Tech
Topic: Compression
Replies: 44
Views: 1434

Re: Compression

Yes,so let me get this straight, your shooting for a 17 to 1 compression on your 403 cid motor?

I am hoping you have more then 4 head bolts per cylinder?
by mag2555
Wed Jan 22, 2020 6:07 am
Forum: Engine Tech
Topic: SB Mopar oiling mods
Replies: 10
Views: 544

Re: SB Mopar oiling mods

To detail my reply better, the use of two oil filters ( especially 2 QT filters) will more then make up for any pressure or volume loss incurred by having to run added oil line lenght!
by mag2555
Tue Jan 21, 2020 12:21 pm
Forum: Engine Tech
Topic: SB Mopar oiling mods
Replies: 10
Views: 544

Re: SB Mopar oiling mods

I think the only thing and the best thing you can do is to install a duel oil filter set up with a bypass oil cooler.

Try not to use any stainless steel hose ends of more then 45 degree's during the install.
by mag2555
Mon Jan 20, 2020 12:06 pm
Forum: Engine Tech
Topic: run-in AFR
Replies: 10
Views: 665

Re: run-in AFR

I would be looking into how unnecessarily smooth the port wall finish is in the Intake ports along with the shape at the upper back of the valve bowl and only use the 2 cycle oil as a temporary crutch.
by mag2555
Mon Jan 20, 2020 7:10 am
Forum: Engine Tech
Topic: Connecting rod bolts
Replies: 7
Views: 476

Re: Connecting rod bolts

The bolt must be stretched beyond where any load on the rod will ever try to stretch it, then it will not back out, but could just break .
If you use rod bolts with the locating dimples so they can be set by stretch and you do not do so then any failure is on your shoulders!
by mag2555
Sat Jan 18, 2020 6:55 am
Forum: Engine Tech
Topic: Broken bolt removal out of a sbf timing cover
Replies: 1
Views: 216

Re: Broken bolt removal out of a sbf timing cover

Heat it up really good first in your oven ( like at 350) then melt some candle wax over the bolt, but before you do all of that grind A dip in the face of the broken bolt to guide / Locate the head of a punch. Once coated with the melted wax take a big flat nose round punch and a good size ball peen...
by mag2555
Fri Jan 17, 2020 6:20 am
Forum: Engine Tech
Topic: 14k rpm 0 deck
Replies: 17
Views: 826

Re: 14k rpm 0 deck

So your for some unknown reason counting on race fuel to keep cylinder / combustion / Exh temps in check?
by mag2555
Thu Jan 16, 2020 11:56 am
Forum: Engine Tech
Topic: Mercury cruiser heads?
Replies: 7
Views: 408

Re: Mercury cruiser heads?

There's no such thing as like new with anything that has been run in a Boat!
If they have been used I would not buy the unless the seller can prove that they pressure check ok!
by mag2555
Thu Jan 16, 2020 6:55 am
Forum: Engine Tech
Topic: cam suggestions for 355
Replies: 17
Views: 1002

Re: cam suggestions for 355

Well if you run a atleast a .500" lift Cam then a solid 500 hp should be made, but for your overall set up I think 180 CC heads will serve you up with a more needed wider power band to work with that trucks weight. If your stuck with those 190 CC heads then run a Cam that will get you .580" to .600"...
by mag2555
Wed Jan 15, 2020 6:53 am
Forum: Engine Tech
Topic: Difference between Ford Racing M-9424-D302 & Vic Jr
Replies: 11
Views: 515

Re: Difference between Ford Racing M-9424-D302 & Vic Jr

Even on a duel plane Intake a 650 cfm Carb is plenty good to net you 400 hp, which your unlikely to attain on a 331 cid motor in true NA everyday street usage form. Why you would concider running a 660 Carb made for tunnel ram usage is leaving me scratching my head unless it was already reworked for...
by mag2555
Tue Jan 14, 2020 2:23 pm
Forum: Engine Tech
Topic: Best head for a boosted SBC
Replies: 4
Views: 362

Re: Best head for a boosted SBC

20 psi and 9.3 comp you say?

On what fuel?
For a head choice I would want one that has a seat incert big enough to allow a up grade to a .1.625 or better " Exh valve .
by mag2555
Tue Jan 14, 2020 2:05 pm
Forum: Engine Tech
Topic: Difference between Ford Racing M-9424-D302 & Vic Jr
Replies: 11
Views: 515

Re: Difference between Ford Racing M-9424-D302 & Vic Jr

Please clarify that last paragraph?
by mag2555
Tue Jan 14, 2020 11:48 am
Forum: Engine Tech
Topic: 6.0 chevy 2500 trk engine oil cooler bypass
Replies: 5
Views: 239

Re: 6.0 chevy 2500 trk engine oil cooler bypass

Not a problem during the Winter months, and maybe not all year long depending on what it carries around for a load on average.
by mag2555
Tue Jan 14, 2020 6:30 am
Forum: Engine Tech
Topic: What is cylinder head choke
Replies: 18
Views: 1064

Re: What is cylinder head choke

With a 23 degree SBC head in terms of aftermarket ones you need to to be in port volume range of 195 to 215 CCs and air flow numbers of greater then 270 cfm@28" before the port area at the push rod buldge becomes a choke point, and even then the flow loss seen is more due to the air stream being for...