Bogging at 4000 rpm

Topics related solely to the Middlebridge Scimitars

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

User avatar
philhoward
RSSOC Member
Posts: 25120
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 58 times
Been thanked: 620 times
Contact:

Bogging at 4000 rpm

Post by philhoward » Mon Jan 21, 2019 7:07 am

16-8mm reducers (joiners) are available on ebay in nylon for a couple of pounds each.

Hose - I’ve seen a few places selling “Marine” hose at 16mm; it’s either that or Goodridge hose if it’s compatible with modern petrol (I suspect it is but an email to them won’t hurt).


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
AJL Electronics
RSSOC Member
Posts: 7809
Joined: Fri Oct 17, 2008 8:49 pm
Location: Gloucester
Has thanked: 45 times
Been thanked: 240 times
Contact:

Bogging at 4000 rpm

Post by AJL Electronics » Mon Jan 21, 2019 8:36 am

I think that Cohline is available in 16mm but I can't afford to have 19.5m left on the shelf unsold! If you get stuck Chris, I will contact Cohline and see if they have a dealer with some stock.

Otherwise, could you adapt in metal?


Yes, we can mend your Scimitar!
Order your Scimitar parts any hour of the day at http://www.classicmicrocars.com (member's discounts).

Fancy a holiday in Gael, France? http://www.ianrhu.com

There is no point trying to teach a pig to sing. It doesn't work and it annoys the pig.

User avatar
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Mon Jan 21, 2019 12:56 pm

Strange that you should say that Andy 8)
Parallel thinking, french plumbers use inch sizes (really!!!), no 1 son is a plumber.
A rummage amongst available plumbing parts came up with this alternative with female thread in 7/8 unf and male in 3/4.
The french call these 1/2 and 3/8 respectively, so you need to have the parts to measure :roll:

So, if I understand Goodridge's site, which is not very clear, I now need a simple straight -8 JIC and I can run the line in 8 mm tube.
Is that right, please ?
Attachments
Capture d’écran 2019-01-21 à 13.40.49.png
Capture d’écran 2019-01-21 à 13.40.49.png (118.38 KiB) Viewed 2141 times
DSCF2309.jpg
DSCF2309.jpg (500.78 KiB) Viewed 2141 times


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Tue Jan 22, 2019 8:18 pm

I am getting completely lost in conversion charts, and Goodridge's site is no help at all.
Demon Tweeks' isn't much better but their paper catalogue has some possibilities I am studying.
Must check the exact dimensions ... wish I had vernier calipers in inch fractions.

Anyway, I have found a JIC size chart and even an explanation of the dash numbers,
apparently they represent the number of 1/16 inch of the outside diameter of the tube :shock:
Which has absolutely no relevance to any of the critical measurements.
Attachments
Capture d’écran 2019-01-22 à 20.20.jpg
Capture d’écran 2019-01-22 à 20.20.jpg (264.29 KiB) Viewed 2112 times


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
Roger Pennington
RSSOC Member
Posts: 20034
Joined: Tue Aug 29, 2006 9:43 pm
Has thanked: 147 times
Been thanked: 527 times

Bogging at 4000 rpm

Post by Roger Pennington » Tue Jan 22, 2019 8:27 pm

DARK STAR wrote:
Tue Jan 22, 2019 8:18 pm
Must check the exact dimensions ... wish I had vernier calipers in inch fractions
Sounds as though a conversion chart might help - like this one for example?


....Roger

RSSOC member (since 1982)
- - - - - - - - - - - - - - - - -
Image

"Condition can be bought at any time; Originality, once lost, is gone forever" - Doug Nye

User avatar
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Tue Jan 22, 2019 9:35 pm

That's pretty neat, thanks Roger :)


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
GavinR
RSSOC Member
Posts: 474
Joined: Wed Dec 01, 2010 11:31 pm
Location: Bristol
Has thanked: 6 times
Been thanked: 19 times

Bogging at 4000 rpm

Post by GavinR » Fri Jan 25, 2019 2:38 pm

DARK STAR wrote:
Tue Jan 22, 2019 8:18 pm
Anyway, I have found a JIC size chart and even an explanation of the dash numbers,
apparently they represent the number of 1/16 inch of the outside diameter of the tube :shock:
Which has absolutely no relevance to any of the critical measurements.
No - it's the inside diameter of the hose in 1/16"
Dash 10 is 5/8" = 16mm
Dash 8 is 1/2" = 13mm
Dash 6 is 3/8 = 9.5mm

So you would still need a reducer to get to 8mm


GavinR
RSSOC Member 3513
1971 SE5a
1970 SE5 Project

User avatar
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Thu Jan 31, 2019 9:32 pm

I know, Gavin :oops:
I got so confused with thread sizes I gave up and used UNF which is apparently standard french plumbing sizes.
I took the opportunity to tidy everything up a bit, to the extent that I dismounted the pump and filter from their cradle -
and replaced them back to front, resulting in lots of bubbling noises from the tank when switched on 8)
Anyway, once that was rectified the engine started ok and after warming thoroughly, I dared to blip the throttle ...
instant redline whoopee I think I've cured it.
When it stops raining I'll take the car out for a blast.

I suppose I ought to clean and touch up the paint here and there to finish the job.
Attachments
DSCF2310.jpg
DSCF2310.jpg (363.39 KiB) Viewed 1882 times
DSCF2315.jpg
DSCF2315.jpg (350.42 KiB) Viewed 1882 times
DSCF2312.jpg
DSCF2312.jpg (346.13 KiB) Viewed 1882 times
DSCF2319.jpg
DSCF2319.jpg (426.34 KiB) Viewed 1882 times
DSCF2317.jpg
DSCF2317.jpg (375.78 KiB) Viewed 1882 times


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Tue Feb 19, 2019 8:20 pm

I don't believe it :bh
The car is running beautifully, a joy to drive etc.
But the fuel pump has started making a high pitched wining noise.
Does this mean that the car will imminently stop running beautifully, a joy to drive etc ?
Or could it just be remains of crap in the system ... please.


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
scimjim
RSSOC Member
Posts: 37869
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 138 times
Been thanked: 984 times

Bogging at 4000 rpm

Post by scimjim » Tue Feb 19, 2019 8:48 pm

Usually indicates that it’s on its way out :(


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
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Sun Feb 24, 2019 9:08 am

Yep, I was off to a classic car meeting this morning with the pump screaming merrily and sensed after only a couple of kilometres that all was not well.
Turned round and got home hesitantly (in almost thirty years of ownership Dark Star has only once failed to get me home 8) )
I will dismount and dismantle the fuel pump if I have the right size hammer, but I imagine it is not possible to repair it.
So I need a new one and looking in the Demon Tweeks bible it seems the model I need has a 7 bar pressure lockout and flows 135 l/hr at 3 bar.
Does this seem reasonable for 210 bhp?


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

User avatar
philhoward
RSSOC Member
Posts: 25120
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 58 times
Been thanked: 620 times
Contact:

Bogging at 4000 rpm

Post by philhoward » Sun Feb 24, 2019 9:29 am

More than enough, Chris. 90 litres per hour was enough for 215bhp...


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: 37869
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 138 times
Been thanked: 984 times

Bogging at 4000 rpm

Post by scimjim » Sun Feb 24, 2019 9:29 am

I’ve been using cheap eBay versions (just buy a spare too) like this without any problems so far?


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
philhoward
RSSOC Member
Posts: 25120
Joined: Tue Aug 29, 2006 5:41 pm
Location: Staffs, UK
Has thanked: 58 times
Been thanked: 620 times
Contact:

Bogging at 4000 rpm

Post by philhoward » Sun Feb 24, 2019 9:33 am

Just gone back through my thread for the Scimega and 210bhp allegedly requires 82 litres per hour. Add in a bit of headroom so anything over 100 litres/hour should be fine.


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
DARK STAR
RSSOC Member
Posts: 5958
Joined: Tue Aug 04, 2009 8:56 pm
Location: Antibes, France
Been thanked: 89 times
Contact:

Bogging at 4000 rpm

Post by DARK STAR » Sun Feb 24, 2019 11:45 am

Thanks chaps.
That eBay Bosch imitation is tempting at the price (even for two!)
I presume it is push-on 12 mm in and 8 mm out ?
My fuel line is 8 mm but starts 12 mm so it is do-able.
I presume it is ok to mount the filter after the pump?


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website No1 on Google, updated nearly every day

Post Reply

Return to “Middlebridge”