A slightly different sort of build (Update: 16/01)
Thread Starter
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Joined: Dec 2008
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From: Milton Keynes
Hi all
Sorry for the late update due to completion of my place and christmas i just havent had time to pop to a write up of how i am doing so heres and update for you all....
The Smaller Pistons after being shot Blasted.
First Sanded down with a 80 Grit to remove most of the roughness
Before and After 80 Grit
I then increased the grit amount in small increments
After a few different sanding papers this is the out come so far still got a little bit more work to do but almost there just another 7 to do
It was time to attach the large pistons to the engine block after a bit of thought I decided to use a standard threaded holes on the block that usually hold the rocker box in place and as they are in each corner of the block it was a no brainer really.
As the thread on the engine block was different to the thread on the piston two custom bolts where made, each bolt (1 for the block and 1 for the Con rod) were cut in half and each end could be attched to one another making a double threaded bolt. excuse the mess this is at the workshop haha
Once cut the bolts were cut end end would butt up against the other but these needed to be as flat and as clean as possible so they were put into a lathe so the ends matches up perfectly.
One of each type of tread where then welded together
Bolt complete this was done 4 times!
One end of the bolt was screwed into the Engine block
then the other end into the Con Rods and tighted up
Once the con rods fitted the Piston Itself has to be adjusted to get a perfect level angle for the glass to sit on, as you can see its very far out! so it was time to use the milling machine and take some off!!
The Piston Before Milling
Milling Machine
As you can see a lump has been removed so the piston can sit flush
Larger Piston Fitted and looking good!
I was hoping id get more done but unfortunately I have a little accident, I kicked a piece of aluminum sheeting in the workshop and as i did my reaction was to catch it before it landed on the floor and as i did it went straight through my little finger right down to the bone so i had to stop play and visit the hospital
doesnt really look too bad in the piccys but was able to see all the bone and everything pretty cool.... not
Comments Welcome!!
Sorry for the late update due to completion of my place and christmas i just havent had time to pop to a write up of how i am doing so heres and update for you all....
The Smaller Pistons after being shot Blasted.
First Sanded down with a 80 Grit to remove most of the roughness
Before and After 80 Grit
I then increased the grit amount in small increments
After a few different sanding papers this is the out come so far still got a little bit more work to do but almost there just another 7 to do
It was time to attach the large pistons to the engine block after a bit of thought I decided to use a standard threaded holes on the block that usually hold the rocker box in place and as they are in each corner of the block it was a no brainer really.
As the thread on the engine block was different to the thread on the piston two custom bolts where made, each bolt (1 for the block and 1 for the Con rod) were cut in half and each end could be attched to one another making a double threaded bolt. excuse the mess this is at the workshop haha
Once cut the bolts were cut end end would butt up against the other but these needed to be as flat and as clean as possible so they were put into a lathe so the ends matches up perfectly.
One of each type of tread where then welded together
Bolt complete this was done 4 times!
One end of the bolt was screwed into the Engine block
then the other end into the Con Rods and tighted up
Once the con rods fitted the Piston Itself has to be adjusted to get a perfect level angle for the glass to sit on, as you can see its very far out! so it was time to use the milling machine and take some off!!
The Piston Before Milling
Milling Machine
As you can see a lump has been removed so the piston can sit flush
Larger Piston Fitted and looking good!
I was hoping id get more done but unfortunately I have a little accident, I kicked a piece of aluminum sheeting in the workshop and as i did my reaction was to catch it before it landed on the floor and as i did it went straight through my little finger right down to the bone
so i had to stop play and visit the hospital doesnt really look too bad in the piccys but was able to see all the bone and everything pretty cool.... not
Comments Welcome!!
Registered User
Joined: Apr 2010
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From: Southampton/Reading
Good work! Shame about the pinky! Looks painful, sheeting is always much sharper than you imagine it to be! I have cut myself on sheet steel before, easily done, and bloody painful!
Still, it is like a knife wound and a clean cut so they heal fairly quickly!
So this table has given you battlescars and all now!
Still, it is like a knife wound and a clean cut so they heal fairly quickly!
So this table has given you battlescars and all now!
Registered User
Joined: Nov 2006
Posts: 1,130
Likes: 1
first time i went to Santa pod in the mid 80's Steve Green was there with his MK1 Cortina. it was red then with a manual gearbox. it may have even been road legal iirc. it used to pop the front wheels off the ground in first and second gear. it was a RWYB so it was the quickest thing there.
must have got through a few engines by now
whats the plan with the block colour wise.
must have got through a few engines by now
whats the plan with the block colour wise.
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Joined: Dec 2008
Posts: 579
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From: Milton Keynes
Yeah it's changed a lot since then, u are correct it was road legal till 1994 where unfortuntaly we rolled the vehicle since then the car has been completely rebuilt by ourselves on a tubular chassie. We are in the process of doing a lot of changes this year as we are in a different class now.
The class we are in is new and for once it's not done in dial in times but heads up racing who ever gets to the end first wins (the way drag racing should be)
I am planning on doing the block in a gloss black and get certain parts polished up to break the colour up a little.
The class we are in is new and for once it's not done in dial in times but heads up racing who ever gets to the end first wins (the way drag racing should be)
I am planning on doing the block in a gloss black and get certain parts polished up to break the colour up a little.
Joined: Feb 2007
Posts: 9,434
Likes: 312
From: Dunfermline.
Off topic but, years ago I had an old set of cosworth pistons left from a rebuild of the rally car engine, so I machined the skirts off to halfway up the gudgeon pin hole polished the insides and was left with four nice cigar ashtrays, slightly expensive though, they cost about £240+ in the late a set. Pity I never took any pics or better still kept the pistons.
