551 A race oddity

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MikeyBikey
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551 A race oddity

Post by MikeyBikey » Thu Jun 25, 2020 9:33 pm

I have a Type 9 that I know is so buggered I’ve not had the courage to open it up. Ive even sold the bellhousing but kept the box that I’m sure is a mausoleum to cogs and bearings


Is we sideways yet...

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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Mon Jun 29, 2020 10:04 pm

The S13 rear selector rod was shortened & re-drilled to fit the S12 tail housing. This was just required for using the S13 gear selectors.

The part that was needed to make the B&M shifter bolt straight on is by swapping the cast piece that fits on the end of the selector rod, that the gear lever locates in to.
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The short casting is the S12, the longer one used in the S13 & S14.

By fitting the longer casting, the B&M quick shifter can be bolted on, by drilling an extra hole. Unfortunately, the castings can only be swapped by splitting the gearbox & removing the tail housing.
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This runs through the gears, but the lever on the quick shift had been previously modified and is loosely bolted together above. I cut in to both the upper & lower parts to slot the 2 bits together in a mortise & tenon joint that had much larger weld areas. I made it the same length & angle as the lever that was in the car, As I'd previously made this to suit me.
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The shifter is moved rearwards by 13mm
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So I may yet have to make the hole in the top of the tunnel larger to suit, I'll see when I put the engine & box back in the car, although I may do a temporary fit with a bare block to check this.


Ben

SS1 CA18DET race car
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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reliant-reviver
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551 A race oddity

Post by reliant-reviver » Tue Jun 30, 2020 8:10 am

Some thought out parts parts swapping that. Should work nicely.


Aaaand we can all steal the ideas


Philip Andrew.
'74 Robin Super Saloon, '84 SS1 1300, '86 SS1 1800ti, '87 SS1 1300
Previous: I lost count around fifty.

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Crouchie_b
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551 A race oddity

Post by Crouchie_b » Tue Jun 30, 2020 9:03 am

reliant-reviver wrote:
Tue Jun 30, 2020 8:10 am
Aaaand we can all steal the ideas
Yes we can!😎
Nice one Ben


Crouchie_b

Modified SS1 Ti - Just Plain Silly https://www.scimitarweb.co.uk/sgwrs/viewtopic.php?t=26204
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stevecrosby63
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551 A race oddity

Post by stevecrosby63 » Tue Jun 30, 2020 9:37 am

excellent job Ben...hopefully it makes a reliable gearbox


i'm making this up as i go along :shock:

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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Fri Jul 24, 2020 10:18 pm

There’s been a delay since the last update, initially time spent procrastinating. I decided rather than buying ARP rods for the standard con-rods, I’d get some steel H-beam rods, which came with ARP rods anyway.

Then there was a delay in getting the rods, they had to be ordered in for me. Once I got them, I the first job was to weigh them; the standard (tickled) rods are 638g each, the new rods are 480g. 158g weight save will take load off the big-end bearings.

Then I took the crank, front pulley, flywheel & clutch pressure plate, pistons & new rods off to be balanced. I had the standard size crank journals polished too.

In parallel, the head has had a couple of little dings in the combustion area welded & then the head very lightly skimmed. I also had the valves & valve seats re-cut & lapped.
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After picking up the balanced parts & doing lots of cleaning, I could start assembly.
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I’m now at the stage of having a short engine, using ACL “race” bearings & plenty of engine assembly lube.
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In the intervening period, I did the final assembly on the gearbox too, so that’s all sealed up & ready to put back in.


Ben

SS1 CA18DET race car
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

Benc
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551 A race oddity

Post by Benc » Sat Jul 25, 2020 8:28 am

Hi Ben
Looking good
What clutch are you using?

Cheers



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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Sat Jul 25, 2020 8:47 am

Benc wrote:
Sat Jul 25, 2020 8:28 am
What clutch are you using?
viewtopic.php?f=20&t=32061&start=135


Ben

SS1 CA18DET race car
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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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Mon Aug 03, 2020 9:43 pm

I’m fitting an ARP head stud kit to this engine, so I had no qualms cuttig a slot in to one of the original head bolts to use it to clean the block threads out
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One the threads were cleaned, the ARP stud instructions are to hand tighten the studs in to the block. The front stud above the water pump was much higher than the rest
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I measured the thread depth to confirm this too, front thread
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Another thread
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I could also see the stud was bottoming out before reaching the end of the thread. I also had a quick search on SXOC, which confirmed it as an issue others have had with the ARP studs (they are all the same legth, I did check). Chopping about 10mm off the front stud resolved this & meant the stud wasn’t bottoming out on the block’s blind hole.
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I also needed to buy a new socket to tighten the head nuts. As ARP are American, the studs have the metric thread for the block, but 3/8” UNF for the nuts, the clearance around the head is really tight too, as the standard bolts are cap-heads. I needed a 1/2” AF, 12 point, deep, thin wall socket. So it was a chance to buy some imperial deep sockets.

The head is now torqued down, with the new Siruda MLS head gasket. I’ve put the cam belt on, but after carefully measuring & marking TDC, I’ll dial in the cams with the vernier pulleys, that’s the next job.
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Ben

SS1 CA18DET race car
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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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Sun Aug 09, 2020 9:30 am

The engine is almost built as far as it can be in the stand.
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I'm going to try to work out how to simplify the cooling pipes under the inlet manifold. With the removal of the oil to water cooler, I'd previously put a single pipe in it's place and looped where the heater take-off used to be, but there has to be a neater solution with less pipe work & joins.


Ben

SS1 CA18DET race car
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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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Mon Aug 10, 2020 11:35 pm

I temporarily dropped the old engine with gearbox in to the car to make some measurements & check the alignment of the gear lever to the gear lever hole in the tunnel.
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The B&M shifter is rewards of the standard location, but it is still just clear of the chassis. I don't think it has enough clearance as is, so I'll need to open up the gear lever hole a little.


Ben

SS1 CA18DET race car
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

efi_sprintgte
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551 A race oddity

Post by efi_sprintgte » Tue Aug 11, 2020 7:49 am

Did exactly the same simplification on my RB25, it was chaos under the inlet manifold!


JC

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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Tue Aug 11, 2020 12:24 pm

I think it can all go. I I don't need or want the thermostat by-pass, the stat is permanently open & I want all coolant to go through the rad, I don't need throttle body heating (for cold weather) & I have no heater take-off and the aforementioned oil to air water cooler in place of the oil to water one.


Ben

SS1 CA18DET race car
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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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Sun Aug 16, 2020 11:14 pm

Engine & box assembled
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and in
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I'd bought a new clutch cable when I built the car, but the clevis was looking like it would suffer imminent failure
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I made up some tabs and welded them on to thicken the sides up where the pin fits through
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After fitting it, I dug out the original (spare) cable from one of my race boxes, it has a much thicker clevis. I can't remember where I got the new one, but it's clear it's not made to the right spec.
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Ben

SS1 CA18DET race car
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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BigBobPilot
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551 A race oddity

Post by BigBobPilot » Sun Aug 16, 2020 11:29 pm

I wanted most of the cooling pack to stay assembled to the armature for removal, as shown below.
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However, I couldn't get at the LH top radiator mount, as I'd made it prior to making the I/C outlet ducting. For removal, I bent it out the way. For re-assembly I wanted to move the fixings so I could access them, so a new little bracket was required.

The original ali bracket, just bolted from the top, holding the square rubber in place. The new bracket is in steel, with the lower piece bolted to the same points on the chassis. The upper piece has new fixings horizontal.
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This is the bracket in place, with the torx driver passing the inner wheel arch
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and hidden away as assembled
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The front armature bolted in place
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Ben

SS1 CA18DET race car
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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