Search found 360 matches

by Calypso
Sat Feb 24, 2018 5:20 am
Forum: Engine Tech
Topic: Sbf detonation
Replies: 2
Views: 769

Re: Sbf detonation

The other is a 302 performer, and the other engine is 351w with stock -69 4v iron intake.
by Calypso
Sat Feb 24, 2018 4:37 am
Forum: Engine Tech
Topic: Stuck spark plugs
Replies: 12
Views: 1458

Stuck spark plugs

Would Kroil help removing these stuck plugs? :shock:
by Calypso
Sat Feb 24, 2018 4:06 am
Forum: Engine Tech
Topic: Sbf detonation
Replies: 2
Views: 769

Sbf detonation

Looking for feedback from experienced Ford builders, if there are certain cylinders in mild street application (dual plane)that are more likely than the others to detonate when you reach the limit. Thinking of tuning the carb and ignition with deto sensor and WB lambda, without a Dyno and need to de...
by Calypso
Sat Feb 24, 2018 1:48 am
Forum: Engine Tech
Topic: Best bang for buck per power
Replies: 3
Views: 933

Re: Best bang for buck per power

If it's to test your dyno, the cheapest way is to hook up someone else's proven 1000hp engine to it. :)

The strange situation where the dyno owner is nervous and the engine owner relaxed...
by Calypso
Fri Feb 02, 2018 4:23 pm
Forum: Engine Tech
Topic: FRPP x307 sbf heads with stock rockers
Replies: 4
Views: 925

Re: FRPP x307 sbf heads with stock rockers

Thanks,

They are the new ones with beehives.
by Calypso
Tue Jan 30, 2018 6:27 am
Forum: Engine Tech
Topic: FRPP x307 sbf heads with stock rockers
Replies: 4
Views: 925

FRPP x307 sbf heads with stock rockers

Can FRPP x307 heads be used with stock stamped steel bolt down rockers without geometry issues? Very close to stock street build 302. Went to those heads as the bang for the buck vs. full rebuild of the old iron ones was good. I appreciate that they are set up for bolt down valvetrain, but will usin...
by Calypso
Wed Dec 20, 2017 12:57 am
Forum: Engine Tech
Topic: Vane on floor of port
Replies: 21
Views: 2915

Re: Vane on floor of port

Shifts the velocity profile upper in the port, reduces secondary flow in the bend, guides the flow better around the valve improving atomization and reduces wetting in the exhaust side of the chamber. May lose a little flow depending how it is directed. In my own crude wet flow testing the differenc...
by Calypso
Wed Dec 06, 2017 6:35 am
Forum: Chassis / Suspension / Body
Topic: Problem after big brake conversion
Replies: 17
Views: 9526

Re: Problem after big brake conversion

New front discs may also have race oriented pads, which may not work properly before they are up to temp. Which means rearward bias before temps are up.
by Calypso
Tue Nov 21, 2017 4:15 pm
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

One in Red Bull F1. Maybe they didn’t have space for muffler.😊
72639A04-7C4F-4A18-8F4A-79FE0A1C3E8A.jpeg
by Calypso
Tue Nov 21, 2017 4:09 pm
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

ptuomov wrote: Tue Nov 21, 2017 12:57 pm That recent photograph of a fully functional high performance engine may be indicative of how this superior design took over the world by storm... ;-)
😊 Maybe they had room for headers instead at the time?
by Calypso
Tue Nov 21, 2017 12:17 pm
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

Apparently resonator at manifold is not exactly new idea :^o
1F9DD8FB-C630-4B30-BD4D-B5110695E624.jpeg
by Calypso
Fri Nov 17, 2017 12:04 am
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

=D> A resonator tube is going to reflect a positive pressure wave back to #1 and #3. How do you reflect a negative wave to #1 in that manifold? (I've got a turbine corking the manifold outlet.) Maybe I’m way off, but wouldn’t 1/4 wavelength resonator connected to #3 be phase shifted to cancel out th...
by Calypso
Thu Nov 16, 2017 10:04 am
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

Just brainstorming atypical ideas... Quarter wavelength resonator for the #3 at the frequency it begins to impact #1. Might be in the ballpark of manifold length at high rpm. A resonator tube is going to reflect a positive pressure wave back to #1 and #3. How do you reflect a negative wave to #1 in...
by Calypso
Wed Nov 15, 2017 10:26 am
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

Just brainstorming atypical ideas... Quarter wavelength resonator for the #3 at the frequency it begins to impact #1. Might be in the ballpark of manifold length at high rpm.
by Calypso
Tue Nov 14, 2017 11:39 am
Forum: Engine Tech
Topic: How to fight exhaust reversion when the primaries are way too short
Replies: 144
Views: 20691

Re: How to fight exhaust reversion when the primaries are way too short

What if, instead of the ”cowpath”, you’d put venturi type of contraction to the end of #1. Less lossy from flow perspective, same speed as ”cowpath”, poor flow to reverse direction and the change of area would reflect part of the pressure wave energy from #3 back to the collecting tube with same sig...