spridgets
[Top] [All Lists]

## Re: [Spridgets] Bugeye/Frogeye Club..... Re: Go fast engine compression

 To: Colin Dodds Re: [Spridgets] Bugeye/Frogeye Club..... Re: Go fast engine compression help Lester Ewing via Spridgets Mon, 15 Jun 2020 22:45:34 -0500 Spridgets , Yahoo Spridget list , "\[bugeye\]" mharc@autox.team.net spridgets@autox.team.net <7807AE91-CF07-4281-B24B-24F2514B05F4@comcast.net>
 ```--===============3347682687800590907== --Apple-Mail=_390F0960-7295-4BCC-8F18-555669DDD1C7 Content-Transfer-Encoding: quoted-printable charset=utf-8 Colin, Thanks, I am NOT trying to calculate compression ratio. I just want a = rough number. Is 6 bad is 200 great? I am inly trying to get a rough = idea if the compression number I have is reasonable for the engine I = have. Between 135 and 150 is what I want to know. Lester > On Jun 15, 2020, at 4:36 PM, Colin Dodds = wrote: >=20 > Sorry Lester, but Steve=E2=80=99s previous answer was correct =E2=80=93 = there are too many variables. How good is the battery, how good is the = starter motor, what=E2=80=99s the tappet gap? The compression ratio = should be calculated by measuring bore and head volumes before the = engine is assembled. It=E2=80=99s impossible to gauge engine = compression from a gauge down the plug hole. All that=E2=80=99s going = to tell you is that they=E2=80=99re all close to the same, which is a = good thing. With your engine specs, I would expect the compression = gauge to read between 135 and 150. > =20 > avagoodday > Colin > www.SpriteParts.com.au > =20 > =20 > From: bugeye@yahoogroups.com [mailto:bugeye@yahoogroups.com]=20 > Sent: Tuesday, 16 June 2020 1:12 AM > To: Weslake1330 > Cc: Spridgets; [bugeye]; Yahoo Spridget list > Subject: Bugeye/Frogeye Club..... Re: [Spridgets] Go fast engine = compression help > =20 > =20 > Well let me put it this way, on a new engine with a street cam is = 135psi a good number? Or should it be closer to 150psi? >=20 > =20 > =20 > Lester > =20 > =20 >=20 >=20 > On Jun 15, 2020, at 2:53 AM, Weslake1330 =20 > In part it will depend on what compression ratio was used in the first = place - 9 to 1 or 10.5 to 1 or whatever? > =20 > On Mon, 15 Jun 2020 at 01:16, Lester Ewing via Spridgets = >>=20 >> hi guys, >>=20 >> With a newly rebuilt 1380 what compression numbers should I expect? >>=20 >> Thanks, >>=20 >> Lester >>=20 >> ------------------------ >>=20 >>=20 >> Donate: http://www.team.net/donate.html = >> Suggested annual donation: \$12.75 >>=20 >> Archive: http://www.team.net/pipermail/spridgets = http://autox.team.net/archive = >>=20 >> Unsubscribe/Manage: = http://autox.team.net/mailman/options/spridgets/weslake1330@gmail.com = > =20 > __._,_.___ > Posted by: JMFangio =20 > Reply via web post = =09 > =E2=80=A2 >=20 > Reply to sender=C2=A0 = st%20engine%20compression%20help>=09 > =E2=80=A2 >=20 > Reply to group=C2=A0 = st%20engine%20compression%20help>=09 > =E2=80=A2 >=20 > Start a New Topic = =09 > =E2=80=A2 >=20 > Messages in this topic = (1)=20 >=20 > If you wish to unsubscribe from the Austin Healey Bugeye Frogeye = Sprite Club, please send a blank email to: = bugeye-unsubscribe@yahoogroups.com > If you no longer want to receive emails, but wish to remain a member = of the group, you may go to the website = http://groups.yahoo.com/group/bugeye/ = and change your subscription to = "Web Only" and you will not receive any emails. >=20 > VISIT YOUR GROUP = > = > =E2=80=A2 Privacy = =E2=80=A2 = Unsubscribe = Terms of Use >=20 >=20 > . >=20 >=20 > __,_._,___ --Apple-Mail=_390F0960-7295-4BCC-8F18-555669DDD1C7 Content-Transfer-Encoding: quoted-printable charset=utf-8 Colin,

Thanks, I am NOT trying to calculate compression ratio. =  I just want a rough number.  Is 6 bad is 200 great?  I = am inly trying to get a rough idea if the compression number I have is = reasonable for the engine I have.  Between 135 and 150 is what I = want to know.

Lester

On Jun 15, 2020, at 4:36 PM, Colin Dodds <colin@spriteparts.com.au> wrote:

Sorry Lester, but Steve=E2=80=99s previous answer was correct = =E2=80=93 there are too many variables.  How good is the battery, = how good is the starter motor, what=E2=80=99s the tappet gap?  The = compression ratio should be calculated by measuring bore and head = volumes before the engine is assembled.  It=E2=80=99s impossible to = gauge engine compression from a gauge down the plug hole.  All = that=E2=80=99s going to tell you is that they=E2=80=99re all close to = the same, which is a good thing.  With your engine specs, I would = expect the compression gauge to read between 135 and 150.

avagoodday
Colin

From: bugeye@yahoogroups.com [mailto:bugeye@yahoogroups.com]
Sent: Tuesday, 16 June 2020 1:12 = AM
To: Weslake1330
Cc: Spridgets; [bugeye]; Yahoo = Spridget list
Subject: Bugeye/Frogeye Club..... = Re: [Spridgets] Go fast engine compression help

Well let me put it this way, on a new engine with a = street cam is 135psi  a good number?  Or should it be closer = to 150psi?

Lester

On Jun 15, 2020, at 2:53 AM, Weslake1330 <weslake1330@gmail.com> wrote:

In part it = will depend on what compression ratio was used in the first place - = 9 to 1 or 10.5 to 1 or whatever?

On Mon, 15 = Jun 2020 at 01:16, Lester Ewing via Spridgets <spridgets@autox.team.net> wrote:

hi guys,

With a newly rebuilt 1380 what compression numbers = should I expect?

Thanks,

Lester

------------------------

spridgets@autox.team.net

Donate: http://www.team.net/donate.html
Suggested annual donation: \$12.75

Archive: http://www.team.net/pipermail/spridgets  http://autox.team.net/archive

Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/weslake1330@gma= il.com

__._,_.___

Posted by: JMFangio <oldsaabguy@comcast.net>

=E2=80=A2

Start a New Topic

Messages in this topic (1)

=E2=80=A2

=E2=80=A2

=E2=80=A2

If you wish to unsubscribe from the Austin Healey Bugeye = Frogeye Sprite Club, please send a blank email to:  bugeye-unsubscribe@yahoogroups.com
If you no longer want to receive emails, but wish = to remain a member of the group, you may go to the website http://groups.yahoo.com/group/bugeye/ and change your = subscription to "Web Only" and you will not receive any emails.

=E2=80=A2 Privacy =E2=80=A2 Unsubscribe =E2=80=A2 Terms = of Use

.

__,_._,___
=
= --Apple-Mail=_390F0960-7295-4BCC-8F18-555669DDD1C7-- --===============3347682687800590907== Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------ spridgets@autox.team.net Archive: http://www.team.net/pipermail/spridgets http://autox.team.net/archive --===============3347682687800590907==-- ```
 Current Thread Re: [Spridgets] Bugeye/Frogeye Club..... Re: Go fast engine compression help, Lester Ewing via Spridgets <= Re: [Spridgets] Bugeye/Frogeye Club..... Re: Go fast engine compression help, Weslake1330 via Spridgets Re: [Spridgets] Bugeye/Frogeye Club..... Re: Go fast engine compression help, Lester via Spridgets