They FINALLY arrived...... - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 11-01-2007, 11:53 PM   #21
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Oregon engine prices are higher due to our 'green State'. We remove each engine and drain all fluids (more labor=more cost) but it'* still cheaper than buying a cheap motor from elsewhere and paying shipping for a motor you can't personally inspect.

There'* nothing to 'port' on a bottom end. It will remain stock until after the intercooler and possible cam. My cam will be custom from the ground up, but will be modelled in a fashion after INTENSE'* blower cams for the S2 with respect to duration.
willwren is offline   Reply With Quote
Old 11-02-2007, 08:09 AM   #22
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quick question on the injectors... you calculated that the current need is less than the S2 injector. Now that you have them and the motor will be getting done, do you fore see a need for the extra fueling from even larger injectors?
BillBoost37 is offline   Reply With Quote
Old 11-02-2007, 09:30 AM   #23
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I've outflowed my stock 29lb injectors at 4bar which runs them at 33lb.

I selected the 32lb injectors to run at 3.5bar producing 34.5lb flow.
I can still jack them up to 4bar if I choose and get them to flow at 37 lb, or:

Move to the 36lb S2 L67 injector at 3bar. I split the difference for the time being. So if I need more flow (assuming I achieve my goal of running intercooled on a ported top end with a cam or even sticking with my 1.8 rockers), I have the ability to continue to increase flow at the turn of a screw or a quick phone call (or a short trip to FIE).

FYI, 36lb injectors will flow at 41.5 if you run them at 4bar.
willwren is offline   Reply With Quote
Old 11-02-2007, 09:47 AM   #24
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quote:
Originally Posted by willwren
FYI, 36lb injectors will flow at 41.5 if you run them at 4bar.
Good to know..My S2 needed more flow with my plans and the 42'* I have will flow to my needs.

Edit.. can you please explain the bar difference. I know you did to me on the phone once and it was very good and interesting info that would benefit others as well.
BillBoost37 is offline   Reply With Quote
Old 11-02-2007, 08:04 PM   #25
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

1 Bar (barimetric pressure) = 14.7 psi
3.5 Bar = 51.5 psi
4.0 Bar = 58.8 psi

My adjustable 4.0 Bar regulator can actually go to a little over 60 psi which is about what the fuel pump produces.
I have mine set now at 54 psi key off and primed. The recommendation for my performance adjustable regulator is 56-58 psi. That is about 4-6 psi higher than stock to account for the 4-6 psi higher boost levels.
I still run rich at about 11 AFR WOT but normal at 14.6 at idle or cruise.

It'* easy to confuse AFR to 1 Bar since the numbers are almost identical.

Bill, I think you are lean at 46 psi key off and primed.
2000SilverBullet is offline   Reply With Quote
Old 11-02-2007, 08:17 PM   #26
Senior Member
Posts like a Northstar
 
Join Date: Jul 2007
Location: Memphis,TN Originally from MA
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
roadtech195 is on a distinguished road
Default

Quote:
Originally Posted by radomirthegreat
Why do you need the replacement engine to have good compression if you're going to work on it?
I would think Will would want an engine with good compression because... I believe the compression test is more to ensure a solid block since he is using his old heads and what not. It would suck to go to a junkyard and pick out a new looking block to find out there is a hairline crack in a water jacket.
roadtech195 is offline   Reply With Quote
Old 11-02-2007, 09:03 PM   #27
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Buyer be ware when you are trying to save a few hundred dollars.

He should have the general protection of a 30 day guarantee on anything sold in the US by any vendor. It'* law.
2000SilverBullet is offline   Reply With Quote
Old 11-02-2007, 09:28 PM   #28
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I have a 90-day warrantee on the motor, and certified oil pressure and compression. The engine was in running condition when pulled from the donor (95 Buick Riviera).

I made a deposit on the motor today, and will pick it up early next week.
willwren is offline   Reply With Quote
Old 11-02-2007, 09:42 PM   #29
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

All right Bill
Now it'* time to get down to business.
2000SilverBullet is offline   Reply With Quote
Old 11-05-2007, 10:33 PM   #30
Senior Member
Posts like a Supercharger
 
Join Date: Oct 2006
Location: Alberta, Canada
Posts: 170
Thanks: 0
Thanked 0 Times in 0 Posts
Drunken Sailor is on a distinguished road
Default

Pardon me if this is ignorant or has been answered before, but why do you strive to run your engine at exactly 14.7:1 AFR? Car manufacturers today only run at 14.7 because it produces the lowest combination of the regulated exhaust emissions. (Read: not the lowest level of some of the gases when measured individually, but the lowest point when the gases are averaged together.)



This is the best chart I could find in a hurry. It doesn't show NOx and CO2, but the NOX curve is roughly at its lowest point at 14.7 as well. Obviously, the more efficient you make combustion, the more CO2 you produce, and its curve is highest at 14.7. (HC + O2 = H2O + CO2.) One of my instructors at trade school often said, "The only reason anything has changed on cars since the 70s is fuel economy and emissions!" He'* mostly right, too.

Anyways, where was I going with this? Oh yeah, peak power is actually gained at a richer air/fuel ratio, around 12.5/13:1. A richer ratio is also an excellent KR killer too. Many racers run at 12 to 1, and most powersports products (Seadoos, ATVs, etc) run a similar ratio too.

Is it for fuel economy? Or is it because we all use the factory PCM to control our engines, which still wants to run 14.7:1?

Not trying to insult anyone, by the way, or step on any toes, just trying to stimulate some interesting conversation.
Drunken Sailor is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Well it Finally arrived after days of talking about it Shadow Your Ride: GM Pictures & Videos 17 04-24-2006 03:21 PM
IT FINALLY ARRIVED !!!! WHOOO...HOOO!!! - It's in..Pics !!! 2000SilverBullet Performance, Brainstorming & Tuning 38 05-27-2005 10:19 PM
2004 Helm Service Manual Arrived 95SLE 2000-2005 5 09-22-2004 11:32 PM
AutoTap USB just Arrived! swartlkk 2000-2005 3 09-06-2004 02:59 PM
The day has arrived! (NOW W/ PICS!) driverjohn2005 Performance, Brainstorming & Tuning 15 06-11-2004 08:39 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:04 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.