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Re: Boost Pressures
Posted by: MattNall ()
Date: June 25, 2020 04:56PM

What gauge are you talking about?



MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Boost Pressures
Posted by: 63turbo ()
Date: June 25, 2020 07:33PM

First thing that is wrong, is the zero's dont line up- remember he said he took apart the stock gauge and stuck the new one inside, also, the new gauge is not centered in the old housing so the first order of business should be to actually center the gauge, and have the zero for the new gauge line up with the old zero. No matter what the units are, if theres a zero on it, it is GAUGE PRESSURE meaning atmospheric pressure= 0. The zero point on the 2 scales have to line up!!

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

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Boost Pressures
Posted by: jjohnsonjo ()
Date: June 25, 2020 07:43PM

Assuming his speedo is some where near accurate and he claims 100+ MPH, you won't get there with a stuck turbo and a stock turbo engine.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: Boost Pressures
Posted by: joelsplace ()
Date: June 25, 2020 08:39PM

I guess you guys need your eyes checked (or maybe I do).
The gauge needle in the picture is pointing at the 0 or slightly below it since I can see the top half of the zero and not the bottom.
What is the confusion?
The picture is at an angle so the gauge could easily be in the center. I guess you could align the new gauge with the old markings if you want.
The thing about the new gauge that seems confusing to me is the pressure marking is in the red part of the gauge but the red doesn't start until after "1". I agree that 0 is atmospheric.
"The zero point on the 2 scales have to line up!!"
Why? It will still only read correctly on both scales at 0. Any other reading they will not agree. I probably would have aligned the zeros but it doesn't matter.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: Boost Pressures
Posted by: 63turbo ()
Date: June 26, 2020 05:21AM

The reason to have the 2 scales line up correctly is to eliminate confusion. The way it is now merely increases confusion. Lined up correctly and centered, idle vacuum would be approximately halfway between 0 and -30 on the outer, and for a stock turbo not fully warm, it wouldnt be unusual to only get 15 inches of mercury
boost (or halfway on the outer scale) so most of the inner scale is kind of useless right now.

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

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



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Re: Boost Pressures
Posted by: playerpage ()
Date: June 26, 2020 10:03AM

Thanks for the concern Kevin.

The gauge is upright according to its own orientation. I wasn't sure it would be accurate otherwise. Don't forget there is a teeny less than half inch hole coming out the back of the gauge mount the tube attachment. In a stock gauge that is coming out of the center, but this new gauge sent it out of the bottom. So the only way for me to get it to even go inside was to cut out a spot, basically elongating that hole. There's no other way to orient it in there unless I want to completely destroy the backing on the dashboard and that might make the gas gauge be incorrectly oriented as well.

It is just barely off center, but that's just a testament to my under developed cutting skills.

And I'm not kidding about 102 almost 103 miles an hour being my record in the car. I track it using a GPS speedometer on the dash, though my current speedometer works fine and is probably about 5 miles an hour under due to the size of my wheels.

That record on the car makes me think something's happening with the turbo, but I don't feel much. I'd also like to think I have tuned it pretty well, I'm no expert, but I get by. Sometimes I can do exactly the right thing and sometimes I will ask a question about the simplest most otherwise obvious thing. Hence my quote at the bottom. :-)

____________________________________________

Eric C. Player, Porterville, CA, USA (Seriously! It's the USA out here!)
MEMBER: CORSA National, Central Coast CORSA, South Coast CORSA, Vintage CORSA, Sfba CORSA, and the San Joaquin Valley Corvair Club.
THEN:
1965 Monza 110, Canary Yellow
1965 Corsa 180 Turbo, Red
1966 Monza 110, Purple
1967 Monza 140, Red
1966 500 110, Black; nicknamed "Shadow"
1965 Monza 110, Camaro Yellow; nicknamed "Silver"
NOW:
1966 Corsa 180 Turbo, Blue; nicknamed "Bluvair"

"He cautioned me not to take notes. It would not have helped if I had, as he would start a paragraph with, 'It is therefore obvious. . .'
and go on from there to matters which may have been obvious to him and God but to no one else."
-- Robert A. Heinlein, character of Daniel B. Davis, 'The Door Into Summer.'



Edited 2 time(s). Last edit at 06/26/2020 10:09AM by playerpage.

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Re: Boost Pressures
Posted by: joelsplace ()
Date: June 26, 2020 10:51AM

A good running stock engine would probably go that fast. I have a worn out 84hp '63 that will run about 90 (eventually).
I'm just guessing. Does anyone know top speed on LMs with various engines?
I've read top speed on an EM Spyder was 110 but I would guess that is gearing and heat limited.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

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Re: Boost Pressures
Posted by: American Mel ()
Date: June 26, 2020 11:08AM

About 20 years ago, when my Vert was a 110/PG,
I had it up to an indicated, 110mph.
I have NO IDEA how accurate Corvair speedometers are at that range of the scale though.
And NO, I did not have a GPS 20 years ago. sad smiley

-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
Have; '66 Monza Coupe - 140, 4-spd. Daily driver beater
'67 Monza Vert. - 140, 4-spd. Daily driver beater
'67 A/C Moredoor Monza
Have had; '61 Monza coupe, 80hp, PG
'62 Monza Wagon, 4spd.
'63 Spyder,
'65 Corsa
.
non-vair
'04 Dodge Cummins Quad Dually, approaching 400K
'03 Honda Del Sol
17'Terry

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Re: Boost Pressures
Posted by: MattNall ()
Date: June 26, 2020 11:20AM

TODAY everyone can check with their phone... My '67 has shown 105-107 on a phone AP and two Garmen's.

Here's my 0-60 time



Edited 1 time(s). Last edit at 06/26/2020 11:22AM by MattNall.

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Re: Boost Pressures
Posted by: American Mel ()
Date: June 26, 2020 11:29AM

Yeah, I LOVE the Speed Apps. I have a few on my phone.
One is just a Simple, Large Scale (as in VISIBLE) speedometer.
And the others have smaller speed displays, BUT have various recording options.
Amazing tech we have at our finger-tips today.
thumbs up

-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
Have; '66 Monza Coupe - 140, 4-spd. Daily driver beater
'67 Monza Vert. - 140, 4-spd. Daily driver beater
'67 A/C Moredoor Monza
Have had; '61 Monza coupe, 80hp, PG
'62 Monza Wagon, 4spd.
'63 Spyder,
'65 Corsa
.
non-vair
'04 Dodge Cummins Quad Dually, approaching 400K
'03 Honda Del Sol
17'Terry

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Re: Boost Pressures
Posted by: gnvair ()
Date: June 26, 2020 01:45PM

The most boost I have seen was 13 psi with the stock 66 YH.
I run an F/B turbo with 62-63 turbo heads (140 exhaust tubes and machined registers for the 65-69 cylinders).
140 exhaust manifolds with a larger cross over.
Boost starts at the top of first. I can get full boost in 2nd gear.

Lee J

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Re: Boost Pressures
Posted by: slow61 ()
Date: June 26, 2020 01:50PM

Hey Matt

If that's the 0-60 time for your 110pg, what kind of 0-60 are you pulling down in your Turbo car?

For reference, Our lakewood get about 20seconds 0-60 using an app on my phone, and the 61 turbo measured at 10.7 last weekend. The turbo has more in it for sure, but I'm too timid to hard launch and haven't been revving it out all the way between shifts.

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Re: Boost Pressures
Posted by: MattNall ()
Date: June 26, 2020 03:34PM

Actually never times it!

You be the "guestimater" gg

[youtu.be]

I'll bet high 6's with me driving. 3.27's early trans, short tires

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Boost Pressures
Posted by: MattNall ()
Date: June 26, 2020 03:54PM

slow61 Wrote:
-------------------------------------------------------
the 61 turbo measured at 10.7 last weekend. The turbo has more in it for sure, but I'm too timid to hard launch and haven't been revving it out all the way between shifts.
===============================================

Yours is a stock 180 yh? How high rpm? I run a Weber and shift at 5800..right before it lays over..Slick shifting early trans...but I'm not a good shifter.

Why I luv autos.. Had a '87 Supra Turbo with larger HKS setup...sub 6's without fail.

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Boost Pressures
Posted by: slow61 ()
Date: June 26, 2020 04:25PM

No. It's a 180 engine with a Stromberg WW, wrapped exhaust, and adv/ retard unit right now. I had to send my safeguard in for repair this past week.sad smiley

Cars also a bit lighter than stock. No back seat or carpet, plexiglass engine lid.

Been shifting at 4500. I've been seeing 12 on the autometer boost gauge in 3rd, and I'm honestly kinda afraid I'll build more boost and damage something if I hold on much further.

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Re: Boost Pressures
Posted by: MattNall ()
Date: June 26, 2020 04:42PM

Yup! I have a small"V-block" under my pedal to hold boost to 7psi except on cold days.I like to run pump 91.

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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