- Thread starter langy
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brightspark
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well if i make anything and polish it to that decree its either all or nothing. i wouldnt spoil it with a bog standard elbow un polished . so either its a stainless steel elobow that will polish up or a coated brass one that wontYou seem to have a polishing fetish John
langy
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Yep i work the same way, I'm not actually using that elbow as its the wrong one, I only put it there for demo purposes as i've got one already polished but couldn't find it, As usual the next day there it was on the bench 
well if i make anything and polish it to that decree its either all or nothing. i wouldnt spoil it with a bog standard elbow un polished . so either its a stainless steel elobow that will polish up or a coated brass one that wont
langy
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walker7182006
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those are some sexy looking welds i must say Great job + write up
langy
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pedrobedro
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Is there a taper for the 90° elbow to seal into inside the bolt or does it rely on the threads?
langy
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JimM
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Just read all 23 pages of this thread and am gob smacked at the attention to detail and the quality of the work, the finished car is going to be stunning. Will you actually want to drive it when done - I'd be too scared !
One question, when you say 'polish out the welds' how do you actually do this?
Cheers
Jim
One question, when you say 'polish out the welds' how do you actually do this?
Cheers
Jim
langy
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Yes mate it will definitly get driven and raced, no point in having it otherwise.
To be honest lots of Hotrods are finished to a very high standard.
To polish out the welds i kiss them lightly with a tungsten burr to take off any highs and then use a radiused felt wheel with varying abrasive grit in 180 then 320 then hit with a sisal mop, finish off with a cotton stitched mop and job done
Its not difficult but can be time consuming.
You should end up with this
To be honest lots of Hotrods are finished to a very high standard.
To polish out the welds i kiss them lightly with a tungsten burr to take off any highs and then use a radiused felt wheel with varying abrasive grit in 180 then 320 then hit with a sisal mop, finish off with a cotton stitched mop and job done
Its not difficult but can be time consuming.
You should end up with this
langy
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Well my Con-rods finally arrived so dropped them into the machinest so he could finish balancing all the reciprocating parts so should soon be able to button up the short motor
Another thing i wanted to sort was the adapters for the early Cadillac valve covers i'm using, I was going to get them from the states but after waiting an eternity i decided to make my own.
I decided to make them in 2 parts for a couple of reasons, the first being that the 2 lower holes in the early covers conflict with the original lower holes, the other reason was i needed a little extra rocker clearance as i may go to full roller rockers at a later point so the 2 parts would give me a minimum of 5/8" extra lift.
First i made a plywood template as the early covers are a bit shorter than the 500 covers.
The local laser cutter first made up a thin sheet to check fitment before cutting the 8mm plate.
The sheet try out was a little out on some of the holes so the laser cutter modded the drawing slightly and cut 4 plates in 8mm steel.
The holes were cleaned out with a drill as the laser leaves a small pip where it starts and finishes, then the holes were countersunk to accept 1/4" UNC countersunk socket head screws, the heads are flush with the plate.
It was here i suddenly realised that the laser cutter had put holes in all 4 pieces as i had asked for 2 to be blank, Not a massive problem as i can weld up the holes that matter and those that don't matter will be covered by the gasket but annoying.
4.2mm holes were drilled at the clamping points and the top plate drilled out to 5mm and the bottom plate tapped 5mm, the top plate was then countersunk to accept 5mm countersunk socket cap screws.
Next job was to mark the 4 stud holes that hold the valve cover, these were drilled and tapped 6mm for studs.
Next the rocker gear was fitted and marked for a notch either end for clearance.
The plates and heads will be painted the same white as the block so should be barely noticeable.
Another thing i wanted to sort was the adapters for the early Cadillac valve covers i'm using, I was going to get them from the states but after waiting an eternity i decided to make my own.
I decided to make them in 2 parts for a couple of reasons, the first being that the 2 lower holes in the early covers conflict with the original lower holes, the other reason was i needed a little extra rocker clearance as i may go to full roller rockers at a later point so the 2 parts would give me a minimum of 5/8" extra lift.
First i made a plywood template as the early covers are a bit shorter than the 500 covers.
The local laser cutter first made up a thin sheet to check fitment before cutting the 8mm plate.
The sheet try out was a little out on some of the holes so the laser cutter modded the drawing slightly and cut 4 plates in 8mm steel.
The holes were cleaned out with a drill as the laser leaves a small pip where it starts and finishes, then the holes were countersunk to accept 1/4" UNC countersunk socket head screws, the heads are flush with the plate.
It was here i suddenly realised that the laser cutter had put holes in all 4 pieces as i had asked for 2 to be blank, Not a massive problem as i can weld up the holes that matter and those that don't matter will be covered by the gasket but annoying.
4.2mm holes were drilled at the clamping points and the top plate drilled out to 5mm and the bottom plate tapped 5mm, the top plate was then countersunk to accept 5mm countersunk socket cap screws.
Next job was to mark the 4 stud holes that hold the valve cover, these were drilled and tapped 6mm for studs.
Next the rocker gear was fitted and marked for a notch either end for clearance.
The plates and heads will be painted the same white as the block so should be barely noticeable.
langy
langys rodshop
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langy
langys rodshop
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RPM range: 2800-6500/ Advertised duration range: 298* and higher / Duration @ .050" range: 240* and higher / Valve lift range: .550-.590".
Roller rockers........what lift cam are you going to fit?
Finally managed to pick up some 3/8" stainless hex bar so made some valve cover hold downs
Trying to pick out the working of these - are they two pieces?
langy
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steveo3002
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sort that run out mate hehe
looking good
