EFI + IR manifold = idle + low-speed torque Have a great Xmas everyone!! Dave davel@trguys.com
On Dec 24, 2024, at 8:45 AM, dnunn@telus.net wrote:
Ken,
That is certainly possible. The engine idles very smoothly at about 850 rpm.
Dave
From: Ken Green <kenn_green@yahoo.com> Sent: Tuesday, December 24, 2024 8:37 AM To: detomaso@server.detomasolist.com; dnunn@telus.net Cc: 'MICHAEL DREW' <mikeldrew@aol.com>; dan@excaliburre.com Subject: Re: [DeTomaso] Re: Flywheel material and tooth count?
I wonder if EFI makes solves the "buck and snort"? I suspect big carbs and big cams don't meter or distribute fuel real well at low RPM, especially with a single plane intake manifold.
On Tuesday, December 24, 2024 at 08:27:47 AM PST, <[1]dnunn@telus.net> wrote:
Mike,
When I built the engine for 5165 (which now resides in the Jacksonville
Sports Car Museum - [2]https://www.jaxsportscarmuseum.com/gallery-1), I wanted
it to rev as quickly as possible. Accordingly, I made sure the entire
reciprocating assembly was as light at possible. I used a lightweight crank
damper, lightened pistons and rods, gun-drilled crank throws, 157 tooth
aluminum flywheel and a diaphragm pressure plate with an aluminum friction
ring. The engine was internally balanced and had a solid roller cam, T&D
shaft rockers, etc. It revved so fast it was difficult to keep off the rev
limiter. I had none of the "buck and snort" you mentioned, when driving at
low speed. I could easily drive at 2 mph in a parade or in stop and go
traffic. Driving on and off a trailer was easy too. In fact, at parking lot
speeds, it wasn't much different than when it was stock. This leads me to
believe that the "buck and snort" you're describing is a tuning issue that
is masked by a heavy flywheel.
My 2 cents!
Dave
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Dan,
I was convinced to go for a Fidanza aluminum flywheel, and I think it's too
light for the street.
Yes, it makes the engine rev faster which is entertaining. But it, coupled
with a fairly aggressive cam, makes the car buck and snort when trying to
inch along at very low speed. I have to use the clutch and rev the engine
far more than one might expect-almost like a smaller-displacement Ferrari.
Lori's engine has a stock flywheel and has pleasingly truck-like
characteristics at walking pace.
An intermediate-weight flywheel would probably be the best bet.
Mike
Sent from my iPad
On Dec 19, 2024, at 18:53, Julian Kift <[3]julian_kift@hotmail.com> wrote:
164 tooth and personally I'd go with a billet steel flywheel for a
street performance engine
Julian
__________________________________________________________________
From: Dan <[4]dan@excaliburre.com>
Sent: Thursday, December 19, 2024 3:44 PM
To: [5]detomaso@server.detomasolist.com <[6]detomaso@server.detomasolist.com>
Subject: [DeTomaso] Flywheel material and tooth count?
Does anyone know what tooth count for the flywheel? And what is better
for a
performance street Pantera, steel or aluminum?
Thanks,
Dan
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References
1. mailto:dnunn@telus.net 2. https://www.jaxsportscarmuseum.com/gallery-1 3. mailto:julian_kift@hotmail.com 4. mailto:dan@excaliburre.com 5. mailto:detomaso@server.detomasolist.com 6. mailto:detomaso@server.detomasolist.com 7. mailto:detomaso@server.detomasolist.com 8. mailto:detomaso-leave@server.detomasolist.com 9. mailto:detomaso-request@server.detomasolist.com 10. mailto:detomaso-request@server.detomasolist.com 11. mailto:detomaso@server.detomasolist.com 12. mailto:detomaso@server.detomasolist.com 13. mailto:detomaso-request@server.detomasolist.com 14. mailto:detomaso-owner@server.detomasolist.com 15. mailto:detomaso@server.detomasolist.com 16. mailto:detomaso-leave@server.detomasolist.com _______________________________________________
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