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Search took 0.00 seconds. Search: Posts Made By: Tom Vaught
Forum: Pontiac - Boost 04-08-2021, 04:10 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
I had a typo above. If you look at that map, it...

I had a typo above. If you look at that map, it can move .48 Kilograms of air mass per second. I was not paying attention to the specific graph posted and assumed the number on the bottom of the page...
Forum: Pontiac - Boost 03-27-2021, 11:19 AM
Replies: 28
Views: 6,516
Posted By Tom Vaught
41.48 lbs of air mass will make 548 horsepower. ...

41.48 lbs of air mass will make 548 horsepower.
Be it a 360 engine or a 400 Pontiac engine.
If the turbo is supplying 41.48 lbs of air mass it does not care what the engine size is, 360 cid, 400...
Forum: Pontiac - Boost 03-26-2021, 08:10 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
Repost the Turbo Map showing the Lbs/Minute...

Repost the Turbo Map showing the Lbs/Minute numbers at the bottom of the map. Without that info the map posted is worthless to look at.

Tom V.
Forum: Pontiac - Boost 03-24-2021, 10:20 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
Where did you get engine rpm info from the...

Where did you get engine rpm info from the compressor map you posted?

Tom V.
Forum: Pontiac - Boost 03-24-2021, 09:03 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
A bit more information on KG/sec and Lbs/Min: ...

A bit more information on KG/sec and Lbs/Min:

.1 KG/sec is equal to 13.23 lbs/min.

1.0 KG/sec is equal to 132.28 Lbs/Min.

Using this converter: ...
Forum: Pontiac - Boost 03-24-2021, 08:02 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
Notice how the Pressure Ratio curve is to the...

Notice how the Pressure Ratio curve is to the right of the Surge Line nicely, even at a low
26 lbs of air mass flow. And this is at a 2.0 pressure Ratio.

Notice with the boost regulated by a...
Forum: Pontiac - Boost 03-23-2021, 06:17 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
Can't disagree with that as I own a pair of the...

Can't disagree with that as I own a pair of the S475 Turbos my self.
They are scheduled to go on a short deck 366 Pontiac engine with Ported SD aluminum heads.

Tom V.
Forum: Pontiac - Boost 03-23-2021, 10:06 AM
Replies: 28
Views: 6,516
Posted By Tom Vaught
To Have a good turbo match, you would like: ...

To Have a good turbo match, you would like:

Lower Exhaust Pressure vs Boost Pressure or the same boost pressure (Pressure Ratio is 1 to 1 ).

The Boost Pressure rising fairly quickly but still...
Forum: Pontiac - Boost 03-22-2021, 06:46 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
POST UP THE COMPRESSOR MAP AS WELL AS THE POST #9...

POST UP THE COMPRESSOR MAP AS WELL AS THE POST #9 INFO WITH THE 12.9 BOOST PRESSURE.

Tom V.
Forum: Pontiac - Boost 03-22-2021, 01:57 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
No I mean the Compressor Pressure Ratio. Post...

No I mean the Compressor Pressure Ratio.
Post #5, THE FIRST PICTURE. Top Line Change the values in #3,#4,#5,#6
to 2.0 PRESSURE RATIO. Then re run program and post Compressor flow line again
...
Forum: Pontiac - Boost 03-21-2021, 11:38 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
You really need to assume that the 2.0 pressure...

You really need to assume that the 2.0 pressure ratio does not come in at the 6th column.
You need to assume that the pressure ratio is 2.0 at the #3 column and then a waste gate
allows it to not...
Forum: Pontiac - Boost 03-21-2021, 10:20 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
THAT LOOKS BETTER, POST UP THE REST OF THE...

THAT LOOKS BETTER, POST UP THE REST OF THE INFORMATION BASED ON THE INPUTS YOU MADE IN MATCHBOT.

TOM V.
Forum: Pontiac - Boost 03-20-2021, 07:08 PM
Replies: 28
Views: 6,516
Posted By Tom Vaught
Not close at all. 1) assume about 90% on the...

Not close at all.

1) assume about 90% on the engine efficiency. You are increasing the mass flow with boost, not the volumetric efficiency.

2) A Blow thru carb does NOT act like a Inter-cooler...
Showing results 1 to 13 of 13

 
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