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Search found 105 matches

by Arthur
Sat May 14, 2022 4:20 am
Forum: Engine Tech
Topic: 383 sbc first dyno experience
Replies: 58
Views: 1584

Re: 383 sbc first dyno experience

850 carb is downleg booster ? Reducing plenum volume/ shape pointing to metering fluctuations into chamber Exhaust collector extensions would of soothed it a little End runner lash tests (ex) worth trying Figuring the power delta between centre and end runners helps(manifold dependant) Track testing...
by Arthur
Sat May 14, 2022 2:55 am
Forum: Engine Tech
Topic: 383 sbc first dyno experience
Replies: 58
Views: 1584

Re: 383 sbc first dyno experience

To insight a bit of discussion I am curious on why peaks fell where they did and why it carries up top to 7000rpm. The only headers I could use were my 1 3/4" 4 into 1 headers Could not use the 13" extensions as they hit dyno frame. So shelf header with 3" collector at 6" long with a curved extensi...
by Arthur
Sun Apr 10, 2022 5:13 am
Forum: Engine Tech
Topic: Pro systems carburetor
Replies: 29
Views: 2053

Re: Pro systems carburetor

My suggestion for a budget carb contact ATM. Otherwise get something custom from a more reputable company. Crossing plenty of lines here.. Being honest. I build carbs,and I have repaired a lot of those. I don't fault any company for their calibrations I may not agree with, as long as the components...
by Arthur
Wed Apr 06, 2022 8:58 pm
Forum: Engine Tech
Topic: Pro systems carburetor
Replies: 29
Views: 2053

Re: Pro systems carburetor

jmarkaudio wrote: Wed Apr 06, 2022 2:07 pm My suggestion for a budget carb contact ATM. Otherwise get something custom from a more reputable company.
Crossing plenty of lines here..
by Arthur
Fri Mar 04, 2022 8:36 pm
Forum: Engine Tech
Topic: QFT 1050 - 4150 CARB
Replies: 63
Views: 2728

Re: QFT 1050 - 4150 CARB

You are very methodical and disciplined in documenting against "internet data" - just understand that the Dyno numbers by and large will not translate to the "Best ET/MPH run" - by a large factor.
If this is your test against the rest .. so to speak .. Enjoy.
by Arthur
Thu Feb 24, 2022 3:21 am
Forum: Engine Tech
Topic: Intake manifold spacers
Replies: 47
Views: 2579

Re: Intake manifold spacers

Spacers shine on the stationary dyno stand - you do not want slow fuel discharge and tall spacers in a drag launch scenario.
Paul does nice work.
by Arthur
Mon Jan 18, 2021 9:34 pm
Forum: Engine Tech
Topic: Cool can
Replies: 9
Views: 906

Re: Cool can

smeg wrote: Thu Jan 14, 2021 7:15 pm Forgot to add this is holley carb application. Has anyone tried this on a dyno?
It will show clearer results in the vehicle
No negatives.
by Arthur
Sun Apr 19, 2020 7:06 pm
Forum: Engine Tech
Topic: Has racing been completely shut down?
Replies: 101
Views: 6439

Re: Has racing been completely shut down?

Trump is merely running interference- beguiling the sheeple
The Earth has been jolted to a stop
Race has been run
No miracles are to be expected
Fortitude is the only choice
God Bless-
by Arthur
Sun Mar 15, 2020 2:02 am
Forum: Engine Tech
Topic: Whats Your Definition of a Engine Builder
Replies: 77
Views: 8015

Re: Whats Your Definition of a Engine Builder

Burt Munro -
by Arthur
Sun Sep 22, 2019 6:34 am
Forum: Engine Tech
Topic: High ratio Jesel etc rockers-1.9 to 2.0-on a SB Chev 23 degree head
Replies: 11
Views: 1247

Re: High ratio Jesel etc rockers-1.9 to 2.0-on a SB Chev 23 degree head

Joe, Jesel guy said a while back they 'may' be able to. Am really looking for someone who has actually done it and what was involved to get the geometry correct... Arthur, I would only use T&D or Jesel, not an engine shop as they don't build their own Jesels or T&D's. I doing this deal for a buddy ...
by Arthur
Sat Sep 21, 2019 6:19 am
Forum: Engine Tech
Topic: High ratio Jesel etc rockers-1.9 to 2.0-on a SB Chev 23 degree head
Replies: 11
Views: 1247

Re: High ratio Jesel etc rockers-1.9 to 2.0-on a SB Chev 23 degree head

Comp Engines in SA may be able to assist you..
by Arthur
Mon May 06, 2019 6:13 am
Forum: Engine Tech
Topic: Totalseal rings
Replies: 76
Views: 6306

Re: Totalseal rings

I've always found it a little amusing that the advent of the Zero-Gap ring was for use in air compressors...because they didn't have a one-way check valve yet. The compressor companies tossed then as soon as someone invented that little jewel. I also find it odd that one can attempt to make a compa...
by Arthur
Fri Apr 26, 2019 9:53 pm
Forum: Engine Tech
Topic: comp ratio with solid roller cam
Replies: 88
Views: 6059

Re: comp ratio with solid roller cam

Pretty much the most intelligent post in this thread, thanks Jay. =D> F'Bird, you are an idiot although some times you get it right, most times you do not. It's really sad that you have a following. Fuel curve is king. I could put a 1300 cfm dominator on a stock 283 and MAKE it work perfectly. Is t...
by Arthur
Fri Apr 26, 2019 5:05 am
Forum: Engine Tech
Topic: before/after 383 dyno results
Replies: 492
Views: 40611

Re: before/after 383 dyno results

Because it uses fuel flow in its calculation, we tend to think that BSFC numbers are driven by fuel factors like jetting, atomization, etc., BSFC is driven by jetting, atomization,.... but by many other things too. What other things??? I've seen taking jet away improve BSFC at less power. I've seen...