Different VP44's?
07-23-2004, 07:28 PM
#1
Registered User
Thread Starter
Join Date: May 2004
Location: South Surrey, B.C. Canada
Posts: 177
Likes: 0
Received 0 Likes
on
0 Posts
Different VP44's?
Is the VP44 for a 245 HP different than one for a 235 HP?
Or rather, in my case, would a 245 VP44 work on my 235 HP
CTD? No problems with mine I can see but I'm saving my pennies to get a spare just in case.
Or rather, in my case, would a 245 VP44 work on my 235 HP
CTD? No problems with mine I can see but I'm saving my pennies to get a spare just in case.
07-24-2004, 12:36 AM
#2
Registered User
Join Date: Jul 2003
Location: The Great White North
Posts: 7,129
Likes: 0
Received 0 Likes
on
0 Posts
They are somewhat different......The HO VP-44 is designed to flow more fuel. SO's respond better to fuel boxes, while HO's resond better to bigger injectors. Here are the improvements that were made in the ETH engine:
What's new in the ETH engine:
Electronic Controls: New ECM calibration and fueling algorithms.
Fuel Pump: Increased fuel flow in the Bosch VP44 injection pump.
Injectors: Designed to provide increased fuel flow.
Injector note posted to the TDRoundtable by tgbol:
ETH injectors (3946306) flow 600cc at 100bars for 30 seconds
ETC injectors (3944828) flow 640cc at the same test.
Turbocharger: Revised wastegate setting for 26psi at the turbocharger outlet.
Manifold boost specification is 43.5 inches Hg / 21 psi
Head: Valve seat inserts for added durability.
Pistons: New pistons with higher 17:1 compression ratio.
Flywheel: New flywheel with 330 mm diameter clutch (vs. std. 310 mm).
ISB Design Improvements and Features - from 1998 Mastertech
FWIW: Reports from owners indicate that ETC engines are more responsive than ETH engines are to the major fueling boxes.
What's new in the ETH engine:
Electronic Controls: New ECM calibration and fueling algorithms.
Fuel Pump: Increased fuel flow in the Bosch VP44 injection pump.
Injectors: Designed to provide increased fuel flow.
Injector note posted to the TDRoundtable by tgbol:
ETH injectors (3946306) flow 600cc at 100bars for 30 seconds
ETC injectors (3944828) flow 640cc at the same test.
Turbocharger: Revised wastegate setting for 26psi at the turbocharger outlet.
Manifold boost specification is 43.5 inches Hg / 21 psi
Head: Valve seat inserts for added durability.
Pistons: New pistons with higher 17:1 compression ratio.
Flywheel: New flywheel with 330 mm diameter clutch (vs. std. 310 mm).
ISB Design Improvements and Features - from 1998 Mastertech
FWIW: Reports from owners indicate that ETC engines are more responsive than ETH engines are to the major fueling boxes.
Thread
Thread Starter
Forum
Replies
Last Post
jhenson
3rd Gen Engine and Drivetrain -> 2003-2007
3
09-08-2012 10:37 PM
Fisherguy
3rd Gen High Performance and Accessories (5.9L Only)
29
08-06-2009 12:45 PM
Dave88LX
Performance and Accessories 2nd gen only
4
12-08-2006 02:53 PM