551 A race oddity

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551 A race oddity

Post by turbster » Tue Mar 20, 2018 9:24 am

Looks good Ben, I'm going to have a go at wrapping, just not decided which car is going to be the victim yet :lol:


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551 A race oddity

Post by BigBobPilot » Wed Mar 21, 2018 12:15 am

Having the drivers door in one colour for a whole day clearly didn't sit well with me, so I've cut & added a number background now (numbers plonked on for effect).
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The door handle and link are fitted too, so just an interior release and a window to (make &) fit...


Ben

SS1 CA18DET race car in build
Latest owner of V6 coupe SRE 353G
SSSC Champion 2009, driving "Big Bob"
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551 A race oddity

Post by BigBobPilot » Fri Mar 23, 2018 10:48 pm

A bit more wrapping done
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The joins between horizontal and vertical look quite obvious with the flash, but they are more discrete in reality.

Once the hardtop is sealed & screwed down, I think I'll run a piece of vinyl over the gap, to help smooth the air flow.


Ben

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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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551 A race oddity

Post by efi_sprintgte » Fri Mar 23, 2018 11:20 pm

Good work Mr.G!


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551 A race oddity

Post by BigBobPilot » Sat Mar 24, 2018 3:11 pm

It's amazing what you can find to buy off the shelf for SS1 race cars! This time it's 4mm Lexan windows, you just have to seperate them out from each other:
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I made a windscrren template a while ago, but had to template the hardtop rear window, rubbing my finger along the corner left a nice crease to follow, then I fitted it again and trimmed a bit more to make it a better fit:
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I'll change the screen at some point in the future, when saving weight is higher up the list than getting the car running, but I wanted to mark out the biggest bits first, so I kept cutting
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The rear window I do need in now, it's rough cut now and needing trimming & tidying etc. It's hopefully a little over sized for now
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That leaves me with more managable pieces for making the door windows now.


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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551 A race oddity

Post by BigBobPilot » Sat Mar 24, 2018 11:51 pm

I carried on with the LH rear wing, so that the race wheel can be fitted (it's had a narrower wheel on this corner for sometime). The wing and wheel arch have been on & off a few times this afternoon. Riv-nuts fitted, some cutting & grinding, a bracket between the back of the wheel arch and the chassis made (I need to make one for the RH now too). I need to do some GRP work on the wheel arches to fill in the remaining holes & bond in extension pieces.

The photo of the up-turned rear wing & wheel arch show the amount of stretch that's gone in to it. The fronts were easier... The T-shaped spacer is screwed to the stiffening flange running along the inside of the rear wing, this is to help keep the wing pushed out, the wheel arch return was all cut-away when I bought the car, but is needed too. It's an awkward hole to fill.
20180324_203638.jpg
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I was going to cut the spacer for the rear wing out of the original air intake moulding, before realising it was pretty much what I needed for the LH upper bulkhead, as it has a 90 degree return on it for fitting the raised passenger floor.
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Cut out & tagged in place
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Even the grommet hole works for the exhausr sensor flylead, the slice of the big diameter hole will disapear once matted. There’s a few more GRP bits to prep, as I’m lining up a load of matting jobs to do all together.


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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551 A race oddity

Post by BigBobPilot » Sat Apr 14, 2018 11:40 pm

I’ve not updated my project thread for a while, but I’ve been busy. I’ve been doing a load of finishing off jobs, so this post is more words, less photos. I’ve worked through:
  • Rear coil overs fitted, with rose joint spacers turned down to fit the width of the chassis & semi-trailing arms, as they aren’t 1.5” - which is what all the spacers & rose joints are sold for.
  • Rear anti-roll bar made and fitted, more turning & milling
  • A few brackets & brake pipes adjusted to suit the new rear ARB
  • Electronic boost controller plumbed & wired in
  • Turbo compressor housing clamps sorted, as rotating the housings caused a few issues
  • Waste gate actuator bracket mocked up in aluminium (to check fit), with shortened actuator rod. I need to make this in 3mm steel now. The original wouldn’t fit with the rotated compressor & turbine housings
  • Air filter brackets made & fitted (no velcro or zip-ties)
  • All the wiring for the engine & digi-dash / data logger in. Indicators & wiper left to wire up
  • Boost sensor wiring & plumbing in for
  • The last bits of plumbing sorted, for the fuel tank vent, fuel pipe support brackets, cooling expansion tank elbows
  • All fluids (except brake fluid) in, including some fuel. The fuel fills well (my Marcos is a nightmare, it has to be filled very slowly)
  • Fuel system pressurised – no leaks!
  • Fiddling & faffing with gear lever for ages, after pulling it out to fill the gearbox, I’m not sure that I’ll repeat that again
  • Ignition coil amplifier, bracket made & amp fitted
  • Brackets made & tacked in place for injector resistor, wiper motor, digi-dash
  • Last bit of front cage bracing cut to size & tacked in place
  • Wiper & squirter fitted to the tub
  • Fire extinguisher & electrical cut-out cables fitted to tub
  • More riv-nuts fitted for the LH rear wing
I’ve been working to get the engine running, so I can get booked in for a rolling road session. My old used battery wouldn’t crank the engine, so I had to get a new one yesterday – which is a slightly different size, so my battery mount will need to be cut off the chassis & moved. The plus is that it’s a smaller lighter battery.

Here it’s out on my driveway, in the sunshine (no rain!) the yellow ignition lead hanging over the front of the engine was to check the timing & adjustment of the cam sensor. I had an interlude to get the lawn mowed (while it wasn’t raining).
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The orange wires hanging over the roll cage are the wiper wires. The ones hanging under the steering column are also the wiper & the indicators, these need to be wired in. The rest needs a little tidying, but it’s all there.

There will be a thin GRP panels hiding the wiring either side of the centre panel, & a dash top to tidy it all up, but maybe not straight away.

The good news is the engine fired up very easily with a puff of black smoke, after cranking for a couple of seconds. This is the first time I’ve had the engine running since I bought the car. The bad news is, it didn’t want to stay running. I’d left old spark plugs in it, I thought I’d fit the new ones after getting it up & running, but after pulling them out & looking at them, they were pretty manky, so I fitted the new ones.

One of the coil packs was missing the carbon contact,, with just a little spring in contact with the spark plug so I pulled one of a spare engine to fit:
20180414_195113.jpg
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Still no joy, so I tweaked the cam sensor a bit. It will run, it’s got good oil pressure, but I needed to pump the throttle to keep it running. In fairness, I’ve made a load of mods to suit a Horsham stage 3 ECU chip, but the ECU has got a stage 2 chip in it at the moment. So, the Z32 MAF, bigger injectors & fuel pressure are probably all to cock. So I need to get the right chip ordered before spending time trouble shooting. I didn't get to checking the timing with the cam position, as it wouldn't idle. There was a small oil leak, I think from the oil pressure sender, which has an adapter in there to fit between imperial (dash) & metric (engine). Also I could do with fitting a bleed valve to the cooling system, as it didn't fill easily, a valve at the back in the turbo water feedd pipe should help things.

I need to make a couple of brackets to bolt the cage to the top of the chassis at the door A-pillars, and for the ECU, then pull out all the front section to fully weld the bits that are tacked, then painting. Once the cage is back in, I can finish off tidying / mounting the wiring. I’ll get the bulkhead GRP work sorted while the cage is out of the way.

I was aiming for a 1st race on 5th May, but the list of jobs to do is still looking long, I want to get a rolling road session in, then some track testing before I race, as I want to make sure the engine is safe, and check the car runs with no over-heating or nasty handling traits. I have to say, it’s looking increasingly like it’s a bridge too far, but I need to keep the work going...
Last edited by BigBobPilot on Tue Apr 17, 2018 12:05 am, edited 1 time in total.


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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551 A race oddity

Post by efi_sprintgte » Sun Apr 15, 2018 7:31 am

Keep it up mate! Great work


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551 A race oddity

Post by BigBobPilot » Sun Apr 15, 2018 9:38 pm

Wow, that last post was long. I dont suppose many folks will read that. More photos needed, but not in this post...

I bled the brakes today, I have never taken so long to bleed any brakes before. I just couldn't get fluid through the Tilton master cylinders (x2). I've used them before, usually you just crack the bleed nipple on the m/c before then going to the wheels. The photo below shows the pair of offending nipples at the front of the cylinders (also front dampers in):
20180415_201817.jpg
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I pumped the pedal, pressurized the reservoir, applied vacuum to the bleed nipple, back fed fluid through the bleed nipple. Eventually I got fluid through, but it took an age for both cylinders. Once the fluid was through the cylinder, the rest was as quick & easy as I'd expected. I now have brakes.

Front springs and dampers now in, rear ride height lifted, so the car is pretty much at its initial ride height. It has been very low sitting on solid bars, while I was modifying the wings & wheel arches for the fat slicks. The rear camber looks more sensible now. ARB drop links all fitted up with the correct mis-alignment spacers, rather than the nuts & washers that have been temporarily in there.


Ben

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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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551 A race oddity

Post by scimjim » Sun Apr 15, 2018 10:29 pm

I’m reading it all :D

What have you done with the rear ARB? Rose jointed on standard bar?


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551 A race oddity

Post by BigBobPilot » Sun Apr 15, 2018 11:13 pm

scimjim wrote:
Sun Apr 15, 2018 10:29 pm
I’m reading it all :D

What have you done with the rear ARB? Rose jointed on standard bar?
I've made a new larger diameter rear ARB, with alloy mounts to the chassis. Also with rose jointed drop links. It has some adjustability to soften it off if required.

The front ARB is quite a bit bigger, so (I think) the rear needed some balancing. To be determind if it's the right route once the car hits the track. I'm sure I'll have some tuning to do.


Ben

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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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551 A race oddity

Post by reliant-reviver » Mon Apr 16, 2018 12:41 pm

When a thread doesn't get many responses, it doesn't mean we aren't reading it. Just that you're doing such a good job we have nothing to add!

More pics always welcome.

Disappointing lack of cable ties still.


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551 A race oddity

Post by philhoward » Mon Apr 16, 2018 12:51 pm

Exactly what R-R said ^^

I'm reading and watching but don't have anything useful to add either. Any of my observations would probably be taking a step backwards..although as R-R said, please use some tywraps so the rest of us can relate to it?


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551 A race oddity

Post by Roger Pennington » Mon Apr 16, 2018 9:55 pm

Yes, I'm reading it too, and a very impressive piece of work it is! Keep it up! :)


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551 A race oddity

Post by BigBobPilot » Mon Apr 16, 2018 10:19 pm

Although it is quite possible nobody reads this drivel, I was merely looking at my own post & thought it was too wordy...

By popular demand, here are some cable ties (and a photo):
20180416_221101.jpg
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Controversially, I've used them to tie cables. Yes I will snip the tails when I'm done.


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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