Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here.

          
Reply
 
Thread Tools Display Modes
  #21  
Old 05-08-2023, 08:37 PM
Scott65's Avatar
Scott65 Scott65 is offline
Ultimate Warrior
 
Join Date: Jan 2002
Location: Houston, Texas
Posts: 1,991
Default

That's bada$$!

__________________
'65 Tempest 467 3650# 11.30@120.31
  #22  
Old 05-23-2023, 02:06 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

I had a chance to go out for a test drive this past weekend, and could not be
more pleased with the results. I still need to get the tune dialed in, and had
things setup intentionally on the rich/conservative side, but did get on the
throttle a bit. It pulled nicely - gave it 80% throttle and ran it up to 4400RPM.
Indicated boost was 7PSI and rising. AFRs were in the mid 11's, and injector
duty cycle was passing 85%, which is no surprise since I still have my 42#/hr
units installed.

Next order of business is to order up a set of suitable sized injectors. I'm leaning
towards 80#/hr just to have plenty of margin. I like the ones sold by Ford
Performance parts as they have full datasheets available, making them
especially easy to calibrate.

New in-tank fuel pump is also on the way - I settled on the TI Automotive
F90000285, which ought to be plenty for my goals.

More work to do, but very happy with the direction things are headed.

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #23  
Old 05-25-2023, 08:09 PM
Tom Vaught's Avatar
Tom Vaught Tom Vaught is offline
Boost Engineer
 
Join Date: Dec 2001
Location: The United States of America
Posts: 31,302
Default

Quote:
Originally Posted by ScottP View Post
New in-tank fuel pump is also on the way - I settled on the TI Automotive F90000285, which ought to be plenty for my goals.

More work to do, but very happy with the direction things are headed.
The TI Automotive F90000285 in-tank fuel pump is an excellent fuel pump.

Tom V.

__________________
"Engineers do stuff for reasons" Tom Vaught

Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
  #24  
Old 05-26-2023, 01:39 AM
R 70 Judge's Avatar
R 70 Judge R 70 Judge is offline
Ultimate Warrior
 
Join Date: Mar 2002
Location: San Diego, CA
Posts: 2,725
Default

Super cool build! The V7 YSI is a fantastic supercharger. We ran one blow-thru on my friends Buick 455 for years.

__________________
James
1970 Trans Am

Spotts Built 484" IA2, Highports, EFI Northwind
Holley Terminator X sequential EFI fabrication and suspension by
https://www.funkhouserracecars.com/
  #25  
Old 06-23-2023, 07:31 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

Another few weekends pass, and more progress to report. I was able to swap
in the 80#/hr injectors, and they calibrated perfectly. For those interested in
saving a few $$$, you can buy Siemens/Deka 80# injectors directly and still
use the LU80 injector data.

With the larger injectors installed, I've run the motor up to 5000 RPM and am
making 10+PSI. Everything about this combination feels great - AFRs are still
in the low 11's (more fine tuning to do), and over all streetabilty is fantastic.

I'll drop the tank this weekend and swap in the new TI Automotive pump. Its
going to be rainy here all weekend, so might as well make the best of it.

Once that's complete, I'll get a few full-throttle pulls done next week and see
where things land for peak boost. Plan is to set my shift points to ~5800RPM
and see how the airflow and IATs look in the datalogs. This is one of those
times when I wish I lived out in the middle of nowhere - its a bunch harder to
find safe places to do this in the outskirts of Boston.<g>

This all of course has me thinking, how much boost is safe for this
combination? I'm wondering what others are running on their street cars
on pump 93 octane?

-Scott

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
The Following User Says Thank You to ScottP For This Useful Post:
  #26  
Old 06-24-2023, 12:32 PM
Tom Vaught's Avatar
Tom Vaught Tom Vaught is offline
Boost Engineer
 
Join Date: Dec 2001
Location: The United States of America
Posts: 31,302
Default

We ran our "Mule" (at work) 4.6L 4 Valve engine at work with the #82-83 Bosch injectors
and the V7-YSI Vortech Supercharger for years (and made 820 engine HP).

I advised them on the EFI fuel system and fuel pump.

730 rear wheel HP on an accurate dyno.

Tom V.

__________________
"Engineers do stuff for reasons" Tom Vaught

Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
  #27  
Old 07-02-2023, 11:40 AM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

I was able to get the new fuel pump and new Holley Hydramat installed this
weekend and go out for a quick ride to assess the results. The very first thing
I noticed is how QUIET this new fuel pump is. Its not like the Walbro 255LPH
unit I removed was noisy by any means, but the new pump is barely audible.
I like to think that speaks to its build quality.

To make the install in the stock tank a bit easier, I ended up taking my old
TanksInc 5-hole fuel level sender, and retrofit it into my stock tank in the flat
area just forward of the stock sender opening. By doing this, I removed the
burden of having to fit both a sender as well as the pump into the stock
opening. This made the rest of the install a breeze.

I did a few full throttle pulls (no laptop, just the wideband in the dash), and the
AFRs are in the low 11's to high 10's near redline, so I have a bit of cleanup to do
in the VE tables. The good news is that the fuel system had no trouble
keeping up, so I'm going to call this update a success.

-Scott
Attached Thumbnails
Click image for larger version

Name:	IMG_2198.jpg
Views:	181
Size:	92.5 KB
ID:	615272   Click image for larger version

Name:	IMG_2204.jpg
Views:	165
Size:	86.3 KB
ID:	615273   Click image for larger version

Name:	IMG_2208.jpg
Views:	165
Size:	108.6 KB
ID:	615274  

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #28  
Old 07-14-2023, 01:26 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

I've been having lots of fun dialing in and just driving this new combination.
Unfortunately, I'm noticing that my used/self built 4L80E is showing signs of
struggling a bit with the new found torque. I'm seeing indications of slippage
on the 2-3 shift at full throttle. It started happening as I really got the AFRs
dialed in at the upper RPMs, which tells me I'm making more torque than this
trans can handle. I can't really complain, I installed it 6+ years ago, and its
been perfect during that entire time.

So, I've made the call to Jake's and am in line for a new 4L80E. I've elected to
add the optional BOP bellhousing just so I can eliminate my Chevy to BOP
bellhousing adapter and flexplate to converter spacers. I'll end up rebuilding/
freshening the unit I pull out for another project. A buddy of mine has a 65
Riviera where I think my old 4L80E would be perfect.

So, for at least the next 12-14 weeks, I'll keep my foot a bit out of the throttle
and just cruise. I'm sure I'll have another update once I swap in the new
Jake's transmission.

-Scott

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #29  
Old 07-01-2024, 10:08 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

11 months is a long time between updates, but I wanted to let everyone know
where things are at! Since I last posted, many updates have been made to the
Bonneville.

First, my new Jakes Stage 2 4L80E and billet torque converter arrived, and they
have proven to be well worth the wait. For those looking for the ultimate in an
electronic overdrive, look no further - Jakes has you covered.

In addition to getting the new 4L80E installed, I also fabricated a new 3" mandrel
bent exhaust to handle the flow of the new boosted 457 engine. Nobody makes
a kit for a '70 fullsize, so I had to piece it together from bits sourced from RARE
and Flowmaster. The downpipes were from an A&F body kit, while the tail
pipes were intended for an A-body. With some creative fabrication, I made it
all work.

The car also got QA1 coilovers at all 4 corners. Once again, there wasn't a bolt
in option, but some creative work in the catalog yielded parts that were close
enough. I'm now fully adjustable at all 4 corners.

The last change was to update the throttle body and intake elbow to a 102mm
capable setup. At the same time, I also upgraded to a Gen4 cartridge style MAF
that would allow me to meter airflow up to 1024g/sec.

Its all still running on a P59 PCM, but with closed-loop wideband fueling from
an AEM wideband. Rear tires can be vaporized at will, which feels all a bit
childish and fantastic at the same time. Driveability and overall performance
are amazing - no complaints.

The next small project is to add a fuel composition sensor. I don't have E85
widely available locally, but the sensor was cheap, and its easy to plumb in,
so I'll add it just for kicks.

I'll add some pics of the exhaust and suspension updates soon.

-Scott

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #30  
Old 07-01-2024, 10:17 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

Coilovers front & rear
Attached Thumbnails
Click image for larger version

Name:	IMG_0299.jpg
Views:	45
Size:	78.1 KB
ID:	636206   Click image for larger version

Name:	IMG_0301.jpg
Views:	43
Size:	87.8 KB
ID:	636207   Click image for larger version

Name:	IMG_0227.jpg
Views:	49
Size:	82.5 KB
ID:	636208   Click image for larger version

Name:	IMG_0233.jpg
Views:	38
Size:	69.5 KB
ID:	636209   Click image for larger version

Name:	IMG_0238.jpg
Views:	41
Size:	75.2 KB
ID:	636210  


__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #31  
Old 07-01-2024, 10:19 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

More coilover pics
Attached Thumbnails
Click image for larger version

Name:	IMG_0239.jpg
Views:	46
Size:	69.4 KB
ID:	636211   Click image for larger version

Name:	IMG_0240.jpg
Views:	47
Size:	84.9 KB
ID:	636212   Click image for larger version

Name:	IMG_0253.jpg
Views:	33
Size:	39.1 KB
ID:	636213   Click image for larger version

Name:	IMG_0254.jpg
Views:	38
Size:	70.4 KB
ID:	636214  

__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #32  
Old 07-01-2024, 10:22 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

3" mandrel bent exhaust fabrication
Attached Thumbnails
Click image for larger version

Name:	IMG_0364.jpg
Views:	45
Size:	58.1 KB
ID:	636215   Click image for larger version

Name:	IMG_0365.jpg
Views:	42
Size:	67.3 KB
ID:	636216   Click image for larger version

Name:	IMG_0384.jpg
Views:	38
Size:	80.1 KB
ID:	636217   Click image for larger version

Name:	IMG_0394.jpg
Views:	41
Size:	78.2 KB
ID:	636218   Click image for larger version

Name:	IMG_0395.jpg
Views:	48
Size:	67.8 KB
ID:	636219  


__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #33  
Old 07-01-2024, 10:24 PM
ScottP's Avatar
ScottP ScottP is offline
Senior Member
 
Join Date: May 2007
Location: Tewksbury, MA
Posts: 133
Default

More exhaust pics
Attached Thumbnails
Click image for larger version

Name:	IMG_0403.jpg
Views:	44
Size:	56.4 KB
ID:	636220   Click image for larger version

Name:	IMG_0404.jpg
Views:	46
Size:	59.2 KB
ID:	636221   Click image for larger version

Name:	IMG_0411.jpg
Views:	40
Size:	72.8 KB
ID:	636222   Click image for larger version

Name:	IMG_0413.jpg
Views:	49
Size:	81.3 KB
ID:	636223   Click image for larger version

Name:	IMG_0414.jpg
Views:	47
Size:	69.5 KB
ID:	636224  


__________________
70 Bonneville convertible, Vortech V7 YSi supercharged EFI455 + 4L80E
  #34  
Old 07-02-2024, 07:36 AM
mysticmissle's Avatar
mysticmissle mysticmissle is offline
Ultimate Warrior
 
Join Date: Mar 2005
Location: rhode island
Posts: 3,758
Default

car is amazing excellent hot rodding!

__________________
1969 carousel red firebird 455, richmond 5 speed
1964 540 gto
1971 lemans sport convertible
1972 Maverick under slow construction
  #35  
Old 07-02-2024, 07:53 PM
stevep's Avatar
stevep stevep is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Mendon Mass
Posts: 6,608
Default

To say that Scott is a genius would be an understatement.

__________________
The difference between inlaws and outlaws? Outlaws are wanted
  #36  
Old 07-03-2024, 01:01 AM
70 bird's Avatar
70 bird 70 bird is offline
Chief Ponti-yacker
 
Join Date: Feb 2005
Location: Taylor Mi.
Posts: 975
Default

Looks great! Enjoy the boost.

Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 06:01 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017