Hi, I bought a stroker kit for my 390 from Barry and am currently dummy assembling it to check deck heights.
My problem is in the instalation of the "spiro-locks".
These are the Scat alternatives to an internal circlip which holds the wrist pin in the piston.
I can't fit them into their grooves, in the instructions scat says pull them apart like a thread but I don't want to distort them too much.
I guess one of my problems is I live in Australia and if I stuff anything it has to come from America and that's time consuming and hard.
Any sugestions would be greatfully accepted.
Jim
Few things are more satisfying than that click when it takes a set
October 24 2008, 6:28 AM
I did the last set after having eye surgery, so I was still blindfolded. That is a task, but its rewarding as hell. If you can do that blindfolded, you can about knock up a whole football stadium full of women just walkin' by JK
I can't see much better now, but it was worth a try. It is a satisfying task though, and the little screwdriver really helps. I think I stretched then to about 1 1/2 inches and like Ross said just walked them in. Like Barry said though, be sure you have the pistons and rods turned right, they are a lot harder to get out than in. One thing that helps is to figure out the bevel on how the rod big end goes to crank fillet and the flat sides go together on a journal, and the how valve notches or domes are set. You can feel that with your hands, and concentrate and the job will fly by.
that you have the pistons and rods in the correct locations before putting the second side together.
If you think those are fun to install you should try removing them.
Piston valve notches toward the intake valley...
Wider chamfer on the rod's big end toward the counterweight on the crank journal....
Trim your fingernails first. If you get that little screwdriver caught under the nail while yer push'n that bastard in, it'll bleed for hours. Please DON'T ask me how I know. The flashbacks are harrowing!
Yep - the only thing that lets out more bodily fluids is working with braided steel hose. Actually, you will get the hang of it pretty quick. Just expand the loc, start one end and wind them in. My 351C has two per side. I used a smaller screwdriver that had a chipped blade to help guide, but if you get the one end in the groove good, the right "twist of the wrist" just spins 'em in.
it's quite easy to push spirolocks into the groove, after they're started, by using your thumbnail/end of your thumb as a 'pusher'. And it's very good to know that you can buy a tool from RACE that will 'unscrew' installed spirolocks. Very handy.
KS
That all sounds easy fellas, I've got the next twelve hours to get all 32 in so if I can still type I will try and thank everyone after that.
Thanks heaps
Jim.
I am trying to download some pics to see if it works.
comment about "dummying up" the engine....you do not need to use the spirolocs at this time...(prolong the agony)...use one piston / rod combo to check 4 corner deck...then use one rod to check all 8 pistons...and one piston to ckeck all 8 rods...record ALL specs then mix and match !!!
Good point John. I was worried the wrist pin might rub on the bore but I guess there's no need to be concerned.
I was pleased with all the advice everyone gave me. I tried to email Scat but got no response.
Jim
JK
