Webcon Retrojet

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Rob Jones
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Webcon Retrojet

Post by Rob Jones » Tue Nov 14, 2017 9:12 pm

Good afternoon all,
Looking at installing the webcon retrojet onto my gtc, has anyone done this previously?.
Or does anyone know of installation of the system onto an alternative classic car?
Not doing it for anything other than it seems a great system to replace the carb and possibly ensure correct fuel burn.
Kind regards
Rob.



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manny
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Post by manny » Tue Nov 14, 2017 9:21 pm

i am swaying towards this for my GTC- where are you located?


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Post by scimjim » Tue Nov 14, 2017 9:53 pm

I have one which will possibly end up on the coupe with megasquirt.


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Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
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Webcon Retrojet

Post by manny » Tue Nov 14, 2017 10:01 pm

scimjim wrote:
Tue Nov 14, 2017 9:53 pm
I have one which will possibly end up on the coupe with megasquirt.
i know very little about the set up etc at the moment - but that's combination i will be going for- mainly as i am not too far from Aldon Automotive :D and they 're megasquirt friendly..


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Webcon Retrojet

Post by BusaPhill » Tue Nov 14, 2017 10:50 pm

Jenvey is another company that make aftermarket carb injection bodies.

Not cheap

If I was to build a system from scratch it would have a injector for each cylinder.
And MegaSquirt.


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Webcon Retrojet

Post by manny » Wed Nov 15, 2017 8:54 am

BusaPhill wrote:
Tue Nov 14, 2017 10:50 pm
Jenvey is another company that make aftermarket carb injection bodies.

Not cheap

If I was to build a system from scratch it would have a injector for each cylinder.
And MegaSquirt.
I guess for me - it looks like a straight bolt in - looks standard ( although hidden) - and more importantly caters to my spanner rating - but you are right - if your're going spend the time\money\effort - do it properly to maximise the results


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Post by Diyhell » Wed Nov 15, 2017 2:52 pm

I've also been looking at this idea. Whilst I'm a bit techie, am not sure about the degree in computing needed for a megasquirt?


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Post by Nick » Wed Nov 15, 2017 2:58 pm

The 38DGAS is about as good as carbs get. I get a complete 6 injector system as opposed to 3 carbs. Not sure of the real benefits of replacing a well set up DGAS with a throttle body and one or two injectors.


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Post by philhoward » Wed Nov 15, 2017 3:42 pm

Carb tuning gives you a fuelling curve that is basically 2 straight lines - one on the idle circuit and one for the main jet circuit. Going with an ECU allows you to plot a real curve, or even one with hills and valleys in it.

An injector (albeit slightly compromised running in a multi-cylinder-per-injector format) has much improved vaporisation over a carb - certainly an advantage from cold but will allow lean running on cruise as well as maximum fuelling when flat out that carbs rarely manage - they are a compromise that you have to bias to one end or the other.

Other advantages? No venturi (restriction) either needed or present. if going the whole hog with mappable ignition, then you get to optimise the ignition curve for all conditions of load and engine speed that a distributor can only dream of.


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Post by manny » Wed Nov 15, 2017 3:53 pm

scimjim wrote:
Tue Nov 14, 2017 9:53 pm
I have one which will possibly end up on the coupe with megasquirt.
How soon before it lives and breathes?


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Post by scimjim » Wed Nov 15, 2017 6:09 pm

In Power terms there may be no advantage over a single carb but there are plenty of advantages in terms of reliability and driveability. In addition to the more accurate fuel/air ratio across the complete spectrum from an ECU, injection gives you high pressure fuel delivery, which reduces the chances of fuel vaporisation - an increasing problem with more and more ethanol being added to our petrol.


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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scimjim
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Webcon Retrojet

Post by scimjim » Wed Nov 15, 2017 6:09 pm

manny wrote:
Wed Nov 15, 2017 3:53 pm
scimjim wrote:
Tue Nov 14, 2017 9:53 pm
I have one which will possibly end up on the coupe with megasquirt.
How soon before it lives and breathes?
No idea - it’s well down the list of projects :D


Jim King

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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Webcon Retrojet

Post by Coupe Racing » Wed Nov 15, 2017 6:47 pm

I have a new triple manifold and 3 throttle bodies and 6 injectors

Just need the know how


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