Miatapower List Archive

This read-only message was archived from a public mail list.
Mail From: "Ted Harris" <(email redacted)>

Hello again!

Well Im progressing in my quest for a turbo =3D]
Actually, I got one this past weekend! Well my wife got one...except =
its atatched to a New Beetle :)

At anyrate, my search for the miata turbo continues. thanks to all who =
have emailed me off list and the fine folks at FM.

SO here is my next question.
Measured at the throttle butterfly, which will have a higher heat... =
JRSC @ 6psi or BEGI V.1 @ 6psi.
Both run the 6psi, both non-intercooled.


thanks again

T

This read-only message was archived from a public mail list.
Mail From: "Tom Graham" <(email redacted)>


Ted I can say without a doubt the SC will see less heat at the throttle
plate than the turbo, much less!


The throttle plate is upstream of a SC and downstream of the turbo. ;^)

The centrifugal compressor of the turbo is more efficient than the Eaton.
But at 6 psi the Eaton is very efficient and I don't know if the turbo is in
it's sweet spot so there may not be significant difference. I do know the
water and oil running through the turbo is always being heated not just on
boost. The exhaust is constantly restricted by the cast turbo manifold and
the turbine itself, more heat. The heavy cast manifold even conducts heat
back into the manifold, Ray turned me on to this. That is all a bunch of
extra heat that the SC doesn't put into the engine. But the Miata engine is
tough and can take it okay. Both may require retarded timing which can heat
up an engine. The SC should have a timing control purchased, MSD is included
with the BEGI, it's not needed but it'll run sweeter with it.

Tom Graham


----- Original Message -----
From: Ted Harris <(email redacted)>
To: <(email redacted)>
Sent: Thursday, July 12, 2001 11:12 PM
Subject: More "newbie" questions


Hello again!

Well Im progressing in my quest for a turbo =]
Actually, I got one this past weekend! Well my wife got one...except its
atatched to a New Beetle :)

At anyrate, my search for the miata turbo continues. thanks to all who have
emailed me off list and the fine folks at FM.

SO here is my next question.
Measured at the throttle butterfly, which will have a higher heat... JRSC @
6psi or BEGI V.1 @ 6psi.
Both run the 6psi, both non-intercooled.


thanks again

T

This read-only message was archived from a public mail list.
Mail From: Mark Peugeot <(email redacted)>



Who cares??? Don't take this wrong, but temp at the throttle butterfly
means almost nothing. Which will make more power would be the better
question and IIRC this has been documented.

If I were going no further than 6 PSI, I would consider the JRSC as a
viable option.

Mark


On Thu, 12 Jul 2001, Ted Harris wrote:

> Hello again!
>
> Well Im progressing in my quest for a turbo =]
> Actually, I got one this past weekend! Well my wife got one...except its atatched to a New Beetle :)
>
> At anyrate, my search for the miata turbo continues. thanks to all who have emailed me off list and the fine folks at FM.
>
> SO here is my next question.
> Measured at the throttle butterfly, which will have a higher heat... JRSC @ 6psi or BEGI V.1 @ 6psi.
> Both run the 6psi, both non-intercooled.
>
>
> thanks again
>
> T
>
>

This read-only message was archived from a public mail list.
Mail From: John Suchak <(email redacted)>

The JRSC will be MUCH cooler at the throttle plate, but only because the
throttle plate is before the supercharger..

:^)

John

(Go JRSC! Woo-hoo, we finally won one!!)



Ted Harris wrote:

> Hello again! Well Im progressing in my quest for a turbo =]Actually, I
> got one this past weekend! Well my wife got one...except its atatched
> to a New Beetle :) At anyrate, my search for the miata turbo
> continues. thanks to all who have emailed me off list and the fine
> folks at FM. SO here is my next question.Measured at the throttle
> butterfly, which will have a higher heat... JRSC @ 6psi or BEGI V.1 @
> 6psi.Both run the 6psi, both non-intercooled. thanks again T

This read-only message was archived from a public mail list.
Mail From: (email redacted)


OK. Rephrase Ted's question. Which one of the 6 psi systems will have
the lowest intake air temp at the intake valves? Anybody know, without
guessing? IOW, which one might be considered 'safer' for the engine?

Jim in Tucson


In a message dated 7/12/01 11:09:27 PM US Mountain Standard Time,
(email redacted) writes:
>
>
>
> Who cares??? Don't take this wrong, but temp at the throttle butterfly
> means almost nothing. Which will make more power would be the better
> question and IIRC this has been documented.
>
> If I were going no further than 6 PSI, I would consider the JRSC as a
> viable option.
>
> Mark
>
>
> On Thu, 12 Jul 2001, Ted Harris wrote:
>
> > Hello again!
> >
> > Well Im progressing in my quest for a turbo =]
> > Actually, I got one this past weekend! Well my wife got one...except its
> atatched to a New Beetle :)
> >
> > At anyrate, my search for the miata turbo continues. thanks to all who
> have emailed me off list and the fine folks at FM.
> >
> > SO here is my next question.
> > Measured at the throttle butterfly, which will have a higher heat... JRSC
> @ 6psi or BEGI V.1 @ 6psi.
> > Both run the 6psi, both non-intercooled.
> >
> >
> > thanks again
> >
> > T
> >
>

This read-only message was archived from a public mail list.
Mail From: "Ralph" <(email redacted)>

The SC is the winner in that scenario. But it's like giving a junkie =
drugs and telling him to only take a prescribed amount.=20

Ralph Doehrmann
Sunburst Yellow=20
BB Garrett, Link, FM, BEGI
(email redacted)

----- Original Message -----=20
From: (email redacted)=20
To: (email redacted) ; (email redacted)=20
Cc: (email redacted)=20
Sent: Friday, July 13, 2001 9:02 AM
Subject: Re: More "newbie" questions



OK. Rephrase Ted's question. Which one of the 6 psi systems will have =

the lowest intake air temp at the intake valves? Anybody know, without =

guessing? IOW, which one might be considered 'safer' for the engine?=20

Jim in Tucson=20


In a message dated 7/12/01 11:09:27 PM US Mountain Standard Time,=20
(email redacted) writes:=20




Who cares??? Don't take this wrong, but temp at the throttle =
butterfly=20
means almost nothing. Which will make more power would be the better =

question and IIRC this has been documented.=20

If I were going no further than 6 PSI, I would consider the JRSC as =
a=20
viable option.=20

Mark=20


On Thu, 12 Jul 2001, Ted Harris wrote:=20

> Hello again!=20
>=20
> Well Im progressing in my quest for a turbo =3D]=20
> Actually, I got one this past weekend! Well my wife got =
one...except its=20
atatched to a New Beetle :)=20
>=20
> At anyrate, my search for the miata turbo continues. thanks to =
all who=20
have emailed me off list and the fine folks at FM.=20
>=20
> SO here is my next question.=20
> Measured at the throttle butterfly, which will have a higher =
heat... JRSC=20
@ 6psi or BEGI V.1 @ 6psi.=20
> Both run the 6psi, both non-intercooled.=20
>=20
>=20
> thanks again=20
>=20
> T=20
>=20

This read-only message was archived from a public mail list.
Mail From: John Suchak <(email redacted)>


Yeah, amen to that. I have a JRSC'd 1.6 at 7 psi w/ a Tony pulley,
Bipes MSD, big injectors, Walbro pump. Pretty much the standard upgraded
JRSC setup. (Sans intercooler and crank pulley overlay..) It's fast, no
doubt, but nearing the maximum amount I can get out of the supercharger
without going to a programmable ECU.. And, if one is going that route
and expense, you may as well just go with a turbo for the additional
performance potential.

If I had to do it all again, and hadn't gotten such a *remarkable* deal
(like, essentially free) on my supercharger, I'd go turbo for sure. The
JRSC guys will scream about low RPM grunt and such, but I'd suspect that
once 15psi spools up (what, like a second?!?) it'll whup on 8psi anyday.

John

Ralph wrote:

> The SC is the winner in that scenario. But it's like giving a junkie
> drugs and telling him to only take a prescribed amount. Ralph
> Doehrmann
> Sunburst Yellow
> BB Garrett, Link, FM, BEGI
> (email redacted)
>
> ----- Original Message -----
> From: (email redacted)
> To: (email redacted) ; (email redacted)
> Cc: (email redacted)
> Sent: Friday, July 13, 2001 9:02 AM
> Subject: Re: More "newbie" questions
>
>
>
> OK. Rephrase Ted's question. Which one of the 6 psi systems
> will have
> the lowest intake air temp at the intake valves? Anybody
> know, without
> guessing? IOW, which one might be considered 'safer' for the
> engine?
>
> Jim in Tucson
>
>
> In a message dated 7/12/01 11:09:27 PM US Mountain Standard
> Time,
> (email redacted) writes:
>
> >
> >
> >
> > Who cares??? Don't take this wrong, but temp at the
> > throttle butterfly
> > means almost nothing. Which will make more power would be
> > the better
> > question and IIRC this has been documented.
> >
> > If I were going no further than 6 PSI, I would consider
> > the JRSC as a
> > viable option.
> >
> > Mark
> >
> >
> > On Thu, 12 Jul 2001, Ted Harris wrote:
> >
> > > Hello again!
> > >
> > > Well Im progressing in my quest for a turbo =]
> > > Actually, I got one this past weekend! Well my wife got
> > one...except its
> > atatched to a New Beetle :)
> > >
> > > At anyrate, my search for the miata turbo continues.
> > thanks to all who
> > have emailed me off list and the fine folks at FM.
> > >
> > > SO here is my next question.
> > > Measured at the throttle butterfly, which will have a
> > higher heat... JRSC
> > @ 6psi or BEGI V.1 @ 6psi.
> > > Both run the 6psi, both non-intercooled.
> > >
> > >
> > > thanks again
> > >
> > > T
> > >
>
>
>
>

This read-only message was archived from a public mail list.
Mail From: Mark Peugeot <(email redacted)>



I'd have to guess, but I am betting that the turbo is cooler at 6 PSI @
WOT. Supercharger would be cooler at idle I suspect (Bypass Valve.)

Mark


On Fri, 13 Jul 2001, (email redacted) wrote:

>
> OK. Rephrase Ted's question. Which one of the 6 psi systems will have
> the lowest intake air temp at the intake valves? Anybody know, without
> guessing? IOW, which one might be considered 'safer' for the engine?
>
> Jim in Tucson
>
>
> In a message dated 7/12/01 11:09:27 PM US Mountain Standard Time,
> (email redacted) writes:
> >
> >
> >
> > Who cares??? Don't take this wrong, but temp at the throttle butterfly
> > means almost nothing. Which will make more power would be the better
> > question and IIRC this has been documented.
> >
> > If I were going no further than 6 PSI, I would consider the JRSC as a
> > viable option.
> >
> > Mark
> >
> >
> > On Thu, 12 Jul 2001, Ted Harris wrote:
> >
> > > Hello again!
> > >
> > > Well Im progressing in my quest for a turbo =]
> > > Actually, I got one this past weekend! Well my wife got one...except its
> > atatched to a New Beetle :)
> > >
> > > At anyrate, my search for the miata turbo continues. thanks to all who
> > have emailed me off list and the fine folks at FM.
> > >
> > > SO here is my next question.
> > > Measured at the throttle butterfly, which will have a higher heat... JRSC
> > @ 6psi or BEGI V.1 @ 6psi.
> > > Both run the 6psi, both non-intercooled.
> > >
> > >
> > > thanks again
> > >
> > > T
> > >
> >
>
>
>