The Doctors Coupe - SRE 353G

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The Doctors Coupe - SRE 353G

Post by MikeyBikey » Mon May 07, 2018 8:42 pm

BigBobPilot wrote:
Fri May 04, 2018 2:37 pm
You Guys!

For balance, I'm racing the Marcos tomorrow :D

Doesn't happen if there's no pictures....


Is we sideways yet...

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Mon May 07, 2018 9:45 pm

Ah well, you just need to look at the circuit racing thread:

https://scimitarweb.co.uk/sgwrs/viewtop ... 7&start=75

Just scroll down to the posts from 6th May


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Mon May 07, 2018 9:50 pm

I've been playing with my SS1 race car today, but after putting it back in the garage, I thought I'd have a quick look at the coolant leak on the coupe, it's definitely water pump. The pump is now off, the bearing is shot so I'll order a new one I need to check which hoses need to be repalced too, as Nick said, some are new, some are not. The pump back plate is all cleaned up ready to re-fit, the engine & rad have been flushed through with a hose, so it won't take long to sort out one the new pump arrives.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sat May 19, 2018 2:17 pm

I replaced the water pump last Saturday, so it's coolant continent again. I replaced some of the hoses at the same time, I've still got to do the heater hoses, but I only put water in initially to check for leaks, so I'll have to drain the system & re-fill with anti-freeze anyway.

I'd been looking at steering wheels, but there seems to be no middle ground with them. They are either cheap, or very expensive. I could only find very expensive ones that I liked, so I turned to ebay for a used one. I found a 13" dished Mota Lita wheel for a good price.

The 14" wheel was touching my legs in the driving position:
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The deepest boss I have is only a 6 hole to suit a Mountney wheel, but I had another one that suited 6 or 9 hole; so I saw no problem with re-drilling the deepest one. The smaller wheel doesn't touch my legs and the combination of the deeper dish on the wheel & the deepest boss has moved the wheel 3/4" rearwards, to give me a better driving position.
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Out for a test drive & it's nicely weighted. A little heavy at parking speeds, but that's fine. The rim is a slightly bigger diameter, which works for me.

I re-drilled the door check straps too, to reduce the opening angle of the doors. The front edge was a fag paper clearnce to the front wing at fully open, the drivers door had touched where it flexes a bit. It now has a gap for tolerances & any flex.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by red rocket » Sat May 19, 2018 9:36 pm

Rather a nice place behind that wheel!

Never fathomed why the dials and radio were oddly placed?


I only ride 'em - I dunno what makes them work

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The Doctors Coupe - SRE 353G

Post by efi_sprintgte » Sat May 19, 2018 9:56 pm

Steering wheel looks OK, it’s the foot wear that I love :wink:


JC

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sat May 19, 2018 9:57 pm

red rocket wrote:
Sat May 19, 2018 9:36 pm
Rather a nice place behind that wheel!

Never fathomed why the dials and radio were oddly placed?
I looked at a few photos of dashboards on Matt Greenlys website and all coupes are the opposite way round with the gauges on top & the radio underneath. I guess it's been the opposite way round for a long time, so that's fine.

The clock does have a permenent mist on the glass though. I noticed in your for sale ad. that it said the clock doesn't work.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sat May 19, 2018 9:58 pm

efi_sprintgte wrote:
Sat May 19, 2018 9:56 pm
Steering wheel looks OK, it’s the foot wear that I love :wink:
What my airy race shoes?


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sun Jun 10, 2018 12:21 pm

Having thought I’d cured the misfire on the coupe, it turns out I hadn’t.

It started running badly, then stopped all together and I coasted in to a handy layby. It seemed like it had run out of fuel, so I took the feed pipe off the carb; there was no fuel, I turned on the ignition, the electric pump was rattling away, but no fuel was coming out the pipe.

Leaving the pipe off at the carb, I went to the pump, which had been mounted in the spare wheel well in the boot. I took the feed pipe to the pump off and there was fuel there. I then took the pump outlet pipe off & tried blowing down it, but was going blue in the face with the effort, so there was some restriction. I did eventually manage to blow through it, so put it back on and limped back home the 1 or 2 miles.

I don’t like the original plastic pipes anyway, so it was on my list to change, so last Sunday, I drained the remaining fuel from the tank and stripped off all the fuel pipes. When I got the plastic pipe off, each end was slightly crushed from the hose clips.
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Even before cutting those ends off, I could blow through it ok, there didn’t appear to be any other obvious damage. Where the electric pump was located in the spare wheel well, there was plastic pipe running around the well and through the side. The routing wrapped around the outside of the exhaust hanger. I wasn’t keen on having the fuel pipe above the exhaust, but it looks possible that when the pipe got warm, it could have kinked & closed off the pipe a little, possibly explaining the hot misfire issue?

I’ve used knuifer 8mm pipe for the main run along the chassis rail & re-routed the pipes to the pump (left where it is for now) also in knuifer but no where near the exhaust. All the rubber pipe is replaced too.

While the fuel tank was empty, I whipped out the sender, to check the fuel gauge at the extremes of movement & also have a peer in the tank, which looked very clean in side. The gauge read correctly with the sender at either end, but there was some fuel in the float. I had a quick look in my old stock & found a rusty old sender, but with a good float, so I swapped that over. The gauge now reads full when I brim the tank.

After changing all the pipes, I took it out for a drive and all seemed well, other than a bit of a fluff at higher revs, but then it stalled when I was reversing it up my driveway, which has a slope at the bottom. I took the top of the carb off to check if any dirt had got in there from the new pipes, but I found the fuel level in the bowl quite low. Previously I’d checked the float height against some specs. For the 40 DFI, but I couldn’t find these again, so I thought I’d used the book figures fro the 40 DFA, as the float arrangement is identical. This moved the closed point of the float quite a lot higher, so that the fuel bowl level in the carb is higher. I’m surmising that when I was reversing up the slope, the fuel ran forward away from the main jets, but also lifting up the float & shutting off the needle valve. At higher revs, I’m guessing it was emptying out the bowl too quickly, or the emulsion tubes weren’t operating correctly due to the low level?

With the float level adjusted, it seems to be behaving itself. I’ve subsequently done about 100 miles, but nothing in too much heat, so I’ll wait to see if the hot misfire is resolved.

I also have been changing all the coolant pipes. The heater pipes from the valve to the heater matrix were particularly awkward, and I flushed out the heater matrix with a hose pipe while I had the pipes off. On driving the car, I found the coolant level was dropping, my windows were steaming up & the carpet was damp. I’ve by-passed the heater matrix for now and the coolant level is fine. I’ll save swapping the heater matrix for another time...


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Sun Jun 10, 2018 12:29 pm

On Thursday, I was persuaded to take the coupe down the the Kineton Classics evening again. I was only there for about 40 minutes, but got accosted by 2 different people asking about GTE's when I was climbing out my car.
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Also there was another coupe there, I did chat to the guy who owns it, but I didn't think to ask his name, he lives fairly close by. He's used the car for some road rallies in France, it was very tidy. It had a Dave Speed paint job about 4 years ago.
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We left promptly to go for a curry & pint of Kingfisher at the very good nearby Indian restaurant.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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The Doctors Coupe - SRE 353G

Post by philhoward » Sun Jun 10, 2018 1:28 pm

It’s actually Dave Speeds old car - BARF.


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The Doctors Coupe - SRE 353G

Post by Coupe Racing » Mon Jun 11, 2018 5:47 am

Ref the fuel issue , it’s worth unscrewing the outlet from the bottom of the tank as originally there was a filter installed that is often clogged up.
That being said some people have removed said filter too


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The Doctors Coupe - SRE 353G

Post by Sam&SidScim » Mon Jun 11, 2018 7:02 am

Like Steve says worth removing the tank filter, this is what mine looked like.

Mark
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The Doctors Coupe - SRE 353G

Post by b.c.flat hat » Mon Jun 11, 2018 8:37 am

Bleddy heck Ben! Yerve bin showin' yer jam jar? At a show an' all? Yer'll be 'avin' power naps instead o' power laps next :mrgreen:

Got a heater matrix and original seat if yer still need 'em?



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The Doctors Coupe - SRE 353G

Post by BigBobPilot » Mon Jun 11, 2018 1:20 pm

I did take the fuel outlet out when I drained the tank.. No gauze on there anymore, but all clear.


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
CSCC "Swinging 60s" race series winner in 2011, 2014 & 2015 (Group 2) sharing a Marcos with Iain Daniels

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