[DeTomaso] Holley Sniper
George B
gkb1968 at hotmail.com
Mon Jun 5 15:58:52 EDT 2023
Ken,
I have an open plenum with fairly long runners and its far better than a carb specifically calibrated for my crate engine. The aggressive cam had baf surge and stumbling under 2800rpms, but ran great above that. With the Terminator, drivability is very good down to about 1600 and sort of acceptable to about 1300 now. Incredible. May not be as good with a dual plane manfold, but it's easy to trim out some of the divider with a Dremel tool if needed.
Also, Holley Terminator isn't normal TBI injection with a big injector sitting over each throttle blade. The Holley injectors supplies fuel through an evenly perforated ring tucked into the ID of each throttle bore. You get all the power advantages of evaporational cooling under the blades like a carb plus great cold and hot starts even with a poor vacuum sign to work from. Port injection is very efficient, but takes away the horsepower advantage from the enormous drop in F/A mixture temp under the carb.
Plus it looks like a carb from 1' away.
I would never have gone away from a carb until they came out with this.
George
[Image]
Sent from my Verizon, Samsung Galaxy smartphone
Get Outlook for Android<https://aka.ms/AAb9ysg>
________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of Ken Green via DeTomaso <detomaso at server.detomasolist.com>
Sent: Monday, June 5, 2023 12:54:39 PM
To: lgaato at yahoo.com <lgaato at yahoo.com>; 'David' <david at msmcontractors.org>; detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>; Bill Moore <billmoore6480 at gmail.com>
Subject: Re: [DeTomaso] Holley Sniper
I have read that a single plane manifold has better peak power, but adjacent, consecutive firing, runners steal fuel in the plenum at low and moderate RPM. The only solution I can think of is an EFI with separate injectors for each cylinder. A throttle body EFI system can't do that. It may not make a lot of difference, and if you want a nasty sounding engine maybe you want the the fuel stealing. But if you want a very derivable car, and are going to EFI, I think it is worth using a single plane modified for injectors.
Ken
On Monday, June 5, 2023 at 06:11:51 AM PDT, Bill Moore <billmoore6480 at gmail.com> wrote:
Gil.....
Or you could just get a new 750 DP......
Cheers
Bill Moore
403.860.4300
Calgary / Goodyear
__________________________________________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
lgaato--- via DeTomaso <detomaso at server.detomasolist.com>
Sent: Monday, June 5, 2023 7:04:39 AM
To: 'David' <david at msmcontractors.org>;
detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Holley Sniper
Very good EFI system. Use the master kit to avoid problems, includes
fuel pump. Follow the instructions to the letter. The EFI is not the
cure all, if you have engine problems, fix engine problems fist. If
your engine is running great, but your carb sucks, this will be will be
the answer.
Gil,
4491
-----Original Message-----
From: DeTomaso <detomaso-bounces at server.detomasolist.com> On Behalf Of
David
Sent: Friday, June 2, 2023 6:46 PM
To: detomaso at server.detomasolist.com
Subject: [DeTomaso] Holley Sniper
I'm about ready to pull the trigger and go EFI. Holley Sniper seems to
be reasonable and reliable. Anyone here done that? If so, what did you
do for a fuel pump and where did you mount it?
Thanks,
David Finley
3659
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-------------- next part --------------
Ken,
I have an open plenum with fairly long runners and its far better than
a carb specifically calibrated for my crate engine. The aggressive cam
had baf surge and stumbling under 2800rpms, but ran great above that.
With the Terminator, drivability is very good down to about 1600 and
sort of acceptable to about 1300 now. Incredible. May not be as good
with a dual plane manfold, but it's easy to trim out some of the
divider with a Dremel tool if needed.
Also, Holley Terminator isn't normal TBI injection with a big injector
sitting over each throttle blade. The Holley injectors supplies fuel
through an evenly perforated ring tucked into the ID of each throttle
bore. You get all the power advantages of evaporational cooling under
the blades like a carb plus great cold and hot starts even with a poor
vacuum sign to work from. Port injection is very efficient, but takes
away the horsepower advantage from the enormous drop in F/A mixture
temp under the carb.
Plus it looks like a carb from 1' away.
I would never have gone away from a carb until they came out with this.
George
Image
Sent from my Verizon, Samsung Galaxy smartphone
Get [1]Outlook for Android
__________________________________________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
Ken Green via DeTomaso <detomaso at server.detomasolist.com>
Sent: Monday, June 5, 2023 12:54:39 PM
To: lgaato at yahoo.com <lgaato at yahoo.com>; 'David'
<david at msmcontractors.org>; detomaso at server.detomasolist.com
<detomaso at server.detomasolist.com>; Bill Moore
<billmoore6480 at gmail.com>
Subject: Re: [DeTomaso] Holley Sniper
I have read that a single plane manifold has better peak power, but
adjacent, consecutive firing, runners steal fuel in the plenum at low
and moderate RPM. The only solution I can think of is an EFI with
separate injectors for each cylinder. A throttle body EFI system can't
do that. It may not make a lot of difference, and if you want a nasty
sounding engine maybe you want the the fuel stealing. But if you want
a very derivable car, and are going to EFI, I think it is worth using a
single plane modified for injectors.
Ken
On Monday, June 5, 2023 at 06:11:51 AM PDT, Bill Moore
<billmoore6480 at gmail.com> wrote:
Gil.....
Or you could just get a new 750 DP......
Cheers
Bill Moore
403.860.4300
Calgary / Goodyear
__________________________________________________________________
From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf
of
lgaato--- via DeTomaso <detomaso at server.detomasolist.com>
Sent: Monday, June 5, 2023 7:04:39 AM
To: 'David' <david at msmcontractors.org>;
detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Holley Sniper
Very good EFI system. Use the master kit to avoid problems, includes
fuel pump. Follow the instructions to the letter. The EFI is not
the
cure all, if you have engine problems, fix engine problems fist. If
your engine is running great, but your carb sucks, this will be will
be
the answer.
Gil,
4491
-----Original Message-----
From: DeTomaso <detomaso-bounces at server.detomasolist.com> On Behalf
Of
David
Sent: Friday, June 2, 2023 6:46 PM
To: detomaso at server.detomasolist.com
Subject: [DeTomaso] Holley Sniper
I'm about ready to pull the trigger and go EFI. Holley Sniper seems
to
be reasonable and reliable. Anyone here done that? If so, what did
you
do for a fuel pump and where did you mount it?
Thanks,
David Finley
3659
_______________________________________________
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