Injection for an Essex

Discuss and exchange views and technical information about our cars.

Moderators: scimjim, Lukeyboy46, erikscimitardemon, Roger Pennington, philhoward

Ethanol
Posts: 29
Joined: Mon Feb 04, 2019 9:39 pm

Injection for an Essex

Post by Ethanol » Tue Feb 05, 2019 5:07 pm

I have a 1979 W reg Scimitar and I want to fit a multi-point injection system. Has anyone else done it?


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

User avatar
philhoward
RSSOC Member
Posts: 25471
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 67 times
Been thanked: 656 times
Contact:

Injection for an Essex

Post by philhoward » Tue Feb 05, 2019 5:12 pm



Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

Ethanol
Posts: 29
Joined: Mon Feb 04, 2019 9:39 pm

Injection for an Essex

Post by Ethanol » Sun Feb 24, 2019 5:05 am

That looks expensive my own engine is has a Weber DGAS, I'll fit a mega squirt ECU, convert the DGAS to a throttle body with a Volvo TPS fit the injectors and fuel rail from a 350Z. A Bosch inline pump. I need an injection system to convert my engine to ethanol.


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

User avatar
philhoward
RSSOC Member
Posts: 25471
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 67 times
Been thanked: 656 times
Contact:

Injection for an Essex

Post by philhoward » Sun Feb 24, 2019 7:52 am

Are 350z injectors ethanol safe? I’ve seen mention of specific injectors for ethanol but usually referring to specific vehicles for the Brazilian market although Saab did an E85-compatible engine (and I’m sure others did too).

As a side note, that’s an odd choice for a Profile Signature:

Although ethanol has 3/4 the energy density of petrol it has really high octane I think if we convert to ethanol with high enough compression we can achieve more power. 275HP might be possible with an Essex engine, but you would need 16.5 to 1 compression.

Did you mean to reply to a post rather than add it as a signature?


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

User avatar
scimjim
RSSOC Member
Posts: 38256
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 146 times
Been thanked: 1023 times

Injection for an Essex

Post by scimjim » Sun Feb 24, 2019 9:00 am

The Essex would be a good start for E100 as the additional loads at those kind of CR numbers would wreck most engines. The Essex is over-engineered thanks to it’s planned diesel application. It’s an interesting subject that hasn’t really taken off (despite being around for decades).


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

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), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

User avatar
MikeyBikey
Posts: 5995
Joined: Thu Mar 11, 2010 1:55 pm
Location: Sunny Falmouth. :)
Has thanked: 294 times
Been thanked: 144 times

Injection for an Essex

Post by MikeyBikey » Sun Feb 24, 2019 9:01 am

philhoward wrote:
Sun Feb 24, 2019 7:52 am
As a side note, that’s an odd choice for a Profile Signature:

Although ethanol has 3/4 the energy density of petrol it has really high octane I think if we convert to ethanol with high enough compression we can achieve more power. 275HP might be possible with an Essex engine, but you would need 16.5 to 1 compression.

Did you mean to reply to a post rather than add it as a signature?
Still shorter then yours phil :lol: :lol:


Is we sideways yet...

User avatar
philhoward
RSSOC Member
Posts: 25471
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 67 times
Been thanked: 656 times
Contact:

Injection for an Essex

Post by philhoward » Sun Feb 24, 2019 9:10 am

Which is shorter than Jim’s :mrgreen:


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

User avatar
Coupe Racing
RSSOC Member
Posts: 7398
Joined: Mon Jul 23, 2007 10:51 pm
Location: Nr Telford - Shropshire
Has thanked: 20 times
Been thanked: 99 times

Injection for an Essex

Post by Coupe Racing » Sun Feb 24, 2019 11:49 am

The hardest part is modifying the inlet manifold to accept injectors esp the centre 2 as you won't get much of an angle


Blessed are the Cheese makers

Better to be an hour early than 1 minute late

Ethanol
Posts: 29
Joined: Mon Feb 04, 2019 9:39 pm

Injection for an Essex

Post by Ethanol » Sun Feb 24, 2019 12:22 pm

The heavy build of the Essex engine is one reason why I use it. The heron head is the other, I was able to get cast pistons to fit easier I didn't need to go to the expense of forged domed pistons because of ethanol's low energy density. As the ethanol engine was an MoD radar station emergency generator I don't know what kind of cam it's got fitted. I do know if I re-built my Scimitar Essex to 16.5 to 1 it would do 275HP


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

efi_sprintgte
RSSOC Member
Posts: 1372
Joined: Fri Oct 22, 2010 6:24 pm
Location: Sutton, Surrey
Has thanked: 158 times
Been thanked: 90 times

Injection for an Essex

Post by efi_sprintgte » Sun Feb 24, 2019 1:02 pm

Ethanol wrote:
Tue Feb 05, 2019 5:07 pm
I have a 1979 W reg Scimitar and I want to fit a multi-point injection system. Has anyone else done it?
We built a sprint car that ran a triple carb inlet manifold with 6 TBs. Proved to be far more tractable then triple carbs.

I don’t see how you can get that kind of CR from a Essex and still clear the valves? 11:1 is tight with 300/310 deg cam.


JC

Ethanol
Posts: 29
Joined: Mon Feb 04, 2019 9:39 pm

Injection for an Essex

Post by Ethanol » Sun Feb 24, 2019 1:17 pm

As I said I don't know what cam it has, it might be the distance the piston is from the head at tdc
Last edited by Ethanol on Mon Feb 25, 2019 10:01 am, edited 1 time in total.


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

User avatar
scimmy_man
RSSOC Member
Posts: 1811
Joined: Fri Jan 04, 2008 7:07 pm
Location: selby yorkshire
Has thanked: 6 times
Been thanked: 36 times

Injection for an Essex

Post by scimmy_man » Sun Feb 24, 2019 2:29 pm

philhoward wrote:
Sun Feb 24, 2019 9:10 am
Which is shorter than Jim’s :mrgreen:
er???


I've taken a vow of poverty ...... Annoy me by sending me money!!

User avatar
philhoward
RSSOC Member
Posts: 25471
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 67 times
Been thanked: 656 times
Contact:

Injection for an Essex

Post by philhoward » Sun Feb 24, 2019 3:04 pm

scimmy_man wrote:
Sun Feb 24, 2019 2:29 pm
philhoward wrote:
Sun Feb 24, 2019 9:10 am
Which is shorter than Jim’s :mrgreen:
er???
I was referring to the signature, Mike. 8)


Phil Howard
Scimitarweb Forum Admin
SS1 1600 Rooster Turbo; Sabre Mk1.5, Sabre Mk2
Previous: SE5/5a/SS1 No.1/SS1 Rooster/SS1 1800Ti/SE5a 24 Valve
http://www.ss1turbo.com
Never try and argue with an idiot. They drag you down to their level, then beat you based on experience.

User avatar
scimmy_man
RSSOC Member
Posts: 1811
Joined: Fri Jan 04, 2008 7:07 pm
Location: selby yorkshire
Has thanked: 6 times
Been thanked: 36 times

Injection for an Essex

Post by scimmy_man » Sun Feb 24, 2019 4:16 pm

of course you were


I've taken a vow of poverty ...... Annoy me by sending me money!!

Ethanol
Posts: 29
Joined: Mon Feb 04, 2019 9:39 pm

Injection for an Essex

Post by Ethanol » Mon Feb 25, 2019 12:15 pm

The injectors as is are might not be ethanol safe, but once I've remanufactured them they will be.


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

Post Reply

Return to “General Technical Discussion”