Home  
Site Partners: SpotterGuides Veloce Books  
Related Sites: Your Link Here  

Go Back   TenTenths Motorsport Forum > Racing Talk > Racing Technology

Reply
 
Thread Tools Display Modes
Old 15 Mar 2009, 21:56 (Ref:2416240)   #1
vauxypower
Rookie
 
Join Date: Oct 2008
United Kingdom
Posts: 27
vauxypower should be qualifying in the top 10 on the grid
converting to fuel injection

Hi there guys im thinking of converting my carbed vauxhall ex to fuel injection. What parts from my original system can I keep to cut down some of the cost fuel tank fuel pump throttle linkage? And what systems are recomended for those of you who have EFI cheers.
vauxypower is offline  
Quote
Old 17 Mar 2009, 06:54 (Ref:2417154)   #2
R59
Veteran
 
R59's Avatar
 
Join Date: Mar 2003
Heard and McDonald Islands
Bedfordshire
Posts: 3,523
R59 should be qualifying in the top 10 on the gridR59 should be qualifying in the top 10 on the grid
From someone who build up a Nova GTE from scratch.....
Your fuel tank - no good - unless you run a swirl pot to feed the injection pump, though I'd do that anyway to rule out fuel surge.

Are you changing from DCOE's to injection - then if so, you can retain your inlet manifold if you go to any one of many breeds of throttle body. Weber, Jenvey, Lumenition, and a few others use standard DCOE pattern mountings.

You can retain your original throttle pedal!! The cable *might* be long enough, but you may have to cut/trim/modify to make it fit.

Now for the type of system....

What is the car, and what is it used for? That will decide the size of throttle bodies. It may mean that you have to get your inlet manifold machined/flowed to suit the bodies (ie: you may have 40DCOE's, but 45mm bodies would be better)

My choice for ECU would be DTA. That's a broad choice - because they do a number of different systems depending on how far you want to go (traction control, etc...) or how much you can afford.

Mine is fitted with a Lambda sensor, and can (if I want it) run in a closed-loop mode where the ECU can tweak the map to suit what it see's coming down the chimney.

The only thing you may have to get creative with is the crank pickup. With mine being a Nova, I was able to use a Formula Vauxhall Junior toothed wheel, and a fabricated mount for the pickup. Some GM engines already have the toothed wheel on the crank, and the sensor goes in the block.

You'll need to replace your fuel lines to stuff that can handle up to 100psi (better be safe than sorry - though it'll probably run between 40 and 60psi). I use a Vauxhall (Bosch) fuel pump, with a rising rate pressure regulator, and Bosch "green" injectors.

In terms of power increase, well I found about 10bhp at the top end, but with the mapped ignition and fuelling, mid range picked up between 10 and 20% over carbs, and fuel economy was improved quite a bit too.

So. What are you fitting it to?
R59 is offline  
__________________
There is no substitute for cubic inches. Harry Belamonte - 403ci Vauxhall Belmont!!
A 700hp wayward shopping trolley on steroids!!
Quote
Old 23 Mar 2009, 12:30 (Ref:2422679)   #3
Westysprinter
Racer
 
Westysprinter's Avatar
 
Join Date: Jul 2007
England
Washington
Posts: 372
Westysprinter should be qualifying in the top 10 on the grid
All as above but you will need a second fuel line to return the fuel from the pressure regulator.
Westysprinter is offline  
__________________
2017 NSSCC Champion
You cant win a race at the first corner, but you can lose it....
Quote
Old 23 Mar 2009, 13:19 (Ref:2422721)   #4
BertMk2
Race Official
Veteran
 
BertMk2's Avatar
 
Join Date: Mar 2003
United Kingdom
Nr Maidstone, Kent
Posts: 10,270
BertMk2 is going for a new world record!BertMk2 is going for a new world record!BertMk2 is going for a new world record!BertMk2 is going for a new world record!BertMk2 is going for a new world record!BertMk2 is going for a new world record!BertMk2 is going for a new world record!
Our XE has the distributor chopped off the head too (and the corresponding camshaft has been shortened). It's got an SBD 225 kit fitted, it's worth a look at the SBD website as they have a lot of info on there that's worth a read if you're thinking about going down the throttle bodies route.
BertMk2 is offline  
Quote
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Why doesn't NASCAR use direct fuel injection? bil588 NASCAR & Stock Car Racing 29 24 Jul 2007 22:52
[DVD/Video] Converting tapes to dvds Muzza Armchair Enthusiast 7 18 Apr 2002 08:44
Fuel Injection Rhonn Racing Technology 2 28 Sep 2001 08:20
Direct Fuel Injection Gerard Racing Technology 10 4 Feb 2000 15:53


All times are GMT. The time now is 09:05.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Original Website Copyright © 1998-2003 Craig Antil. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2004-2021 Royalridge Computing. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2021-2022 Grant MacDonald. All Rights Reserved.