When I spoke of grinding your welds smooth this is an example of what I meant. The rear wheel/axle arch is an often cracked area. You want to avoid "kerfs"....notches on the edges which concentrate stress. Smooth/faired welds are the cat's ass.
FourBlades
Feb 13 2011, 08:16 PM
JP,
That looks nice and neat. I have been working towards that. Seam weld, sand, go back and fill in any notches or porous welds. Repeat.
I finally started priming stuff to keep it from rusting while I work, but I know I have more cleaning up to do.
John
J P Stein
Feb 14 2011, 10:01 AM
Sorry if I jumped ahead too much..... the primer kinda threw me. I used a rattle can etch primer made by RM for spot work. It is compatible with any build primer/topcoat I threw at it.
At any rate, a picture is worth a thousand wurds. Here's an ear. I coud have done a better job of it, I guess, but geting out from underneath the SOB became a higher priority.
What do you call a wife who plants a kiss on your newly arrived engine?
Keeper
You got that right!
Don't think I could ever go back to the non car appreciating kind!
I'd have to move a lot of parts out of our bedroom and living room.
John
John, The car looks great... Hope to have some serious progress on the body of my car when the weather breaks. Glad the nose piece was beneficial! Seems we have similar Wives... I think my wife wants the car done more than I do some days. It makes working on it more enjoyable though! Keep up the great work!
Somehow I can't get the new section to fit the car. It is like it is too wide to fit between the fenders. Took some measurements on my other 914s for comparison.
Push it, check it, push it, check it. Get frustrated by the spring back and really crank it. Needed to cut through the fascia to the proper fit and bending. Push it and now it stays where it should. Checked the diagonals and widths. Hammer it here and there to shape it right.
Nothing like a 4 ton hydraulic ram to ensure cooperation.
John
FourBlades
Apr 22 2011, 11:05 AM
Tack weld the pieces on and check the fit with the hood. The hood fits well except where they must have reshaped it to make up for the pushed in driver side. The driver side fender was replace at some point by brazing on a piece from a green car.
John, did you see that someone is selling an IMSA front bumper in the Classifieds?
FourBlades
Apr 22 2011, 11:30 AM
TC,
Yes I did notice that. I am going to check if the one that came with the car is usable. I am now at the point where I can determine if it will work.
I'd rather use the original piece if I can.
John
gms
Apr 22 2011, 12:45 PM
QUOTE(FourBlades @ Apr 22 2011, 12:30 PM)
TC,
Yes I did notice that. I am going to check if the one that came with the car is usable. I am now at the point where I can determine if it will work.
I'd rather use the original piece if I can.
John
This is totally fixable! reuse it!
PeeGreen 914
Apr 22 2011, 03:24 PM
Have you ever heard of Vice Grips? I hope you own stock
Your work is ever impressive Awesome seeing this come together
FourBlades
Apr 22 2011, 03:37 PM
You can never have enough clamps, I actually bought a few more really wide ones for this project.
Things made out of fiberglass can usually be repaired if you don't mind the itching. The fenders and bumper had all been repaired multiple times by globbing on more kitty hair and bondo. I will grind them down to the correct thickness again and repair them the right way, with 12:1 feathering of holes and cracks and then adding new cloth. I used to shape and glass surfboards about 20 years ago, where does the time go?
John
Cairo94507
Apr 23 2011, 07:44 AM
Just WOW! I love the work you are doing to save this piece of Porsche history. Very nice indeed.
trojanhorsepower
Apr 23 2011, 08:29 AM
John,
Great work as always! I was just wondering... what was the point of welding in two large pieces instead of one large one? I am guessing it was to preserve as much of the original car as possible, but would like to hear your thoughts on that.
Thanks and keep up the good work.
-Peter
gms
Apr 23 2011, 09:52 AM
John, this shelf/support is not on the 1971 cars, get it out of there
gms
Apr 23 2011, 09:56 AM
QUOTE(FourBlades @ Apr 22 2011, 04:37 PM)
Things made out of fiberglass can usually be repaired if you don't mind the itching. The fenders and bumper had all been repaired multiple times by globbing on more kitty hair and bondo. I will grind them down to the correct thickness again and repair them the right way, with 12:1 feathering of holes and cracks and then adding new cloth. I used to shape and glass surfboards about 20 years ago, where does the time go?
Glad to hear this, that bumper is fairly unique.
FourBlades
Apr 23 2011, 11:58 AM
Thanks for all the comments!
Peter: I had two pieces from two different cars. I think this made it easier to get them in. Trying to get one piece with the headlight buckets attached and all the lower trunk stuff probably would not have worked. The car narrows the closer it gets to the front, so you can't slide a piece in from the front without some major cutting of one side. I actually cut the fascia in half vertically to make fitting it easier, so it was three major pieces put in.
Glenn: I left the reinforcement on until I fully weld all the new stuff to try to maintain the original shape. I plan to remove it once I start fitting the front oil cooler.
John
SirAndy
Apr 23 2011, 12:09 PM
Very nice work indeed!
FourBlades
Jun 23 2011, 08:18 PM
Been having some computer issues and finally upgraded to windows 7 which has allowed me to eradicate all viruses.
Been working on finishing up the engine bay. Welded on Tangerine Racing rear suspension ear reinforcement plates and made some removable chassis braces. The longs were cracked on the outside around the suspension points so this should help stabilize them.
I've got some smaller heim joints and tubes to build reinforcements for the carrier on the other end of the suspension mounting point. That should help stabilize the other end of the rear arm and keep the toe in from changing.
John
FourBlades
Jun 23 2011, 08:30 PM
Cut out the rusty hell hole.
Some cool rat parties went down inside this race car.
This will get treated and painted before sealing it back up.
John
ellisor3
Jun 23 2011, 08:31 PM
John,
That looks fantastic, you have balls the size of church bells to take on that project.
Can't wait to see it finished. Are you painting it back to its racing colors?
FourBlades
Jun 23 2011, 08:39 PM
Been working on the tunnel and cross brace. Basically all the metal within an inch of the floor is completely rusted away. Cut this all back to solid metal and patched in new pieces.
I thought about trying to get a perfect tunnel from a donor and buy new, repro cross braces and inner firewall pieces. I could have made the interior look close to brand new stock but the guys who built this car originally would never have done that. I plan to just have a bare metal, painted interior where all the welded panels will show. I could try to grind all the welds smooth, but again, that was never what the original builders did.
They did race the car with factory sound deadening tar in place. That all went with the old floor pan and it got stripped off the tunnel. I wonder why they did not bother with that obvious and easy weight reduction?
Should I replace the factory tar to be closer to how it was in the day? I have no idea but I am leaning towards no.
Welded on a new fender to replace the trashed one. Terry (914xprs) supplied this cherry piece for me.
The rubber bushings on the a-arms were replaced with solid aluminum bushings.
They fit very precisely and once cleaned and oiled they spin freely on the a-arm with no play in them. There are no grease fittings, which seems like a problem. Those are 22 mm torsion bars.
Did someone make these and sell them back in the day or were these made just for this car? Anyone know?
John
FourBlades
Jun 25 2011, 08:38 AM
No one has seen solid bushings like I found on the car?
There are no part numbers on them so someone could have just made these on a lathe.
John
dion9146
Jun 26 2011, 06:29 AM
Great build John. Can't comment on the solid bushings, but you can be sure they are just about as stiff as you are going to get for front bushings! Are the rears the same?
I might be tempted to keep them and add grease fittings as you noted.
Dion
gms
Jun 26 2011, 07:40 AM
QUOTE(FourBlades @ Jun 25 2011, 09:38 AM)
No one has seen solid bushings like I found on the car?
There are no part numbers on them so someone could have just made these on a lathe.
John
looks interesting, I have never seen it before. it is not a whole lot different than the Elephant Racing PolyBronze Control Arm Bearings. I would put Zerk fittings and have them grooved for grease penetration.
FourBlades
Jun 26 2011, 07:57 AM
Are the Elephant Bushings actually solid? I thought there was a polyurethane lining inside the bronze?
These things are solid aluminum.
I plan to reuse them if they don't bind.
I guess I could drill some holes and add zerks. Not sure how I would groove the inside of the bushings. Like cutting an inside thread, maybe it could be done on a lathe.
I went on a sand blasting and painting frenzy yesterday and restored most of the front suspension parts.
I have not looked closely at the rear control arms yet. I did notice they had the driver's side rear spring one notch higher than the passenger side. I am guessing this is an attempt at corner balancing?
John
ChrisFoley
Jun 26 2011, 08:20 AM
QUOTE(FourBlades @ Jun 26 2011, 09:57 AM)
Are the Elephant Bushings actually solid? I thought there was a polyurethane lining inside the bronze?
Elephant Bushings are bronze bearing sleeves surrounded by a urethane layer in between the sleeve and the support housing.
QUOTE
These things are solid aluminum.
I plan to reuse them if they don't bind.
Thats the key. As long as they don't bind and you use bearing grease they should work great.
QUOTE
I guess I could drill some holes and add zerks. Not sure how I would groove the inside of the bushings. Like cutting an inside thread, maybe it could be done on a lathe.
Easiest would be with a carbide burr in an end grinder. After you locate the zerk hole, create a spiral groove with a small ball shaped burr made for aluminum.