TRW pin locks..

[64PI]

Does anyone have a part# for SpiroLox or clips for TRW pistons? I'm guessing they are factory size locks. I just don't have a set of pistons in front of me to measure the clip groove. Thanks.

Fred

[gt350hr]

   Fred,
     You need to be careful as TRW typically used a tru-arc lock that was .052 wide. "Industry standard" is .042 wide , same for spirolocks. Using the wrong lock WILL  create too much end float on the pin and damage the lock or piston and have the pin dragging the wall and potentially break the piston. With TRW being gone, you may have to try and find original Ford locks. Just make sure they measure .052 wide.
   Randy

[64PI]

Thanks, Randy. I'll see what I can find.  Finding info on these old pistons is tough.

[66FAIRLANE]

I have a set of 2291F sitting around I can measure but I am not home for a few days?

[Richard F]

I used spirlox on my TRW's and never had a problem.  I admit though that I never measured them I just ordered what was listed in the parts book.  I still have a set new I can dig out the bix for the part number.

[winr1]

http://www.network54.com/Forum/74182/thread/1484247359/last-1484272404/View+Thread



http://www.opticatonline.com/part/sealed-power-lr-n540098-engine-piston-lock-ring


Use w/H304P,329NP,381P, H395P,993P, H994P, H995P, L2245F, L2291F, L2303NF

 Part Number    LR-N540098

00614046882232

16 each

..................................................................................................

https://www.amazon.com/Sealed-Power-LRN540098-16-LOCK-RING/dp/B003TQ6JHK


$29.36

...

http://www.northernautoparts.com/part/vt-lr-n540098

$1.50 each

...

http://sealedpower.carshopinc.com/product_info.php/products_id/106173/LRN540098-16

$24.95 16

..........................................................


http://www.summitracing.com/parts/slp-lr-n540098/overview/


 Brand: Sealed Power

Manufacturer's Part Number: LR-N540098


 Summit Racing Part Number: SLP-LR-N540098

UPC: 614046882232

Wrist Pin Retainer Type: Wire lock

Wrist Pin Retainer Material: Steel

Wrist Pin Diameter (in): 0.975 in.

Wrist Pin Retainer Thickness (in): 0.050 in.

Wrist Pin Retainer Outside Diameter (in): 1.120 in.

...


http://www.summitracing.com/parts/ros-4004-e/overview/


 Wrist Pin Retainer Type: Spirolox

Wrist Pin Retainer Material: Steel

Wrist Pin Diameter (in): 0.975 in.

Wrist Pin Retainer Thickness (in): 0.042 in.

Wrist Pin Retainer Outside Diameter (in): 1.080 in.

...
http://www.roushyatesparts.com/parts-p/jep-094-050-ct.htm


    Style: Tru-Arc Lock
    Wire Diameter: 0.05
    Material: Carbon Steel
    Pin Diameter Range: 1.090 - 1.100

...

https://www.cbperformance.com/ProductDetails.asp?ProductCode=1030

1030 True-Arc Wrist Pin Locks (set of
   
List Price: $6.95
Our Price: $5.95
You save $1.00!

Product Code: 1030
   
....................................................................................

...........................................................................................

http://www.gt40s.com/images/howto/LynnMiner/Reference/SAE_Papers.pdf


...
http://www.ebay.com/itm/Speed-Pro-LR194-16-1-040-in-C-Clip-Speed-Pro-Wrist-Pin-Lock-16-pc-/181910467552?hash=item2a5ab573e0:g:04sAAOSw~bFWKVQ8&vxp=mtr

Speed Pro 1.040 in C-Clip Speed Pro Wrist Pin Lock 16 pc P/N LR194-16


    Wrist Pin Lock
    Speed Pro
    C-Clip
    1.040" Wrist Pin Diameter
    0.042" Thick
    Steel
    Set of 16


...

http://www.mcmaster.com/#circlips/=zp9g1a



   
Fits Groove
   
Ring Size
         
For Bore
Dia.   Dia.   Width   (A)   Thick.   Pkg.
Qty.       Pkg.
Black-Finish Steel
1/4"   0.268"   0.02"   0.28"   0.015"   50   99142A310   $5.78
5/16"   0.33"   0.02"   0.346"   0.015"   50   99142A320   6.05
3/8"   0.397"   0.029"   0.415"   0.025"   50   99142A330   6.05
7/16"   0.461"   0.029"   0.482"   0.025"   50   99142A340   6.05
29/64"   0.477"   0.029"   0.498"   0.025"   50   99142A345   7.62
1/2"   0.53"   0.039"   0.548"   0.035"   50   99142A350   7.78
9/16"   0.596"   0.039"   0.62"   0.035"   50   99142A360   8.07
5/8"   0.665"   0.039"   0.694"   0.035"   50   99142A370   8.58
11/16"   0.732"   0.039"   0.763"   0.035"   50   99142A380   8.75
3/4"   0.796"   0.039"   0.831"   0.035"   50   99142A390   9.79
0.777"   0.825"   0.046"   0.859"   0.042"   50   99142A400   9.65
13/16"   0.862"   0.046"   0.901"   0.042"   50   99142A410   10.81
7/8"   0.931"   0.046"   0.971"   0.042"   50   99142A420   11.60
0.901"   0.959"   0.046"   1"   0.042"   50   99142A430   11.67
15/16"   1"   0.046"   1.041"   0.042"   25   99142A440   7.81
1"   1.066"   0.046"   1.111"   0.042"   50   99142A450   12.83
1.023"   1.091"   0.046"   1.136"   0.042"   50   99142A460   13


...........................................................................................
Tru-Arc ---  Circlip

Relaxed diameter
Thickness
...............................
Factory 360 used

1.066 -- 1.075
.050 -- 1.051


......................
391 FT.. used
1.075  -- 1.082
.052 -- .053
...........................

Unknown
1.055 -- 1.060
.047 -- .050
............................

Forged .. installed, not run
1.080
.052

.......................
Speed Pro 390 cast .. never installed
1.101 -- 1.105
.049 -- .051

Number on package 16x98

......................................

FT wrist pin 186-187 --  .187 thick

Unknown wrist pin   --.140 thick




Ricky.

[67428GT500]

DO NOT USE TRU ARC! Use Spirolocs.  I have seen many come out and destroy cylinder walls.   I have dual Spirolocs in the JE pistons on each side. I had them milled to make removal easier. What a pain in the arse!

[gt350hr]

  Keith is correct , True arcs do not like RPM. The "eyelet" breaks off right at the thinnest point. If one falls out , it's because it wasn't installed correctly. Ford has used them forever in the FE and millions survived. The "sharper edge" of the lock MUST be installed facing the outside of the piston , this secures it in the groove. If the rounded edge is installed outward , the lock has a tendency to "jump out". As I cautioned , use of a different width lock WILL cause a failure. End play on a True arc OR Spirolock WILL cause a failure. .010 is MAXIMUM allowable.
   Ford/TRW/Sealed Power FE pistons are designed to use a .050-.052 lock and Winr1 has provided links to obtain them. Continuous operation /drag racing above 7,000 RPM "could" and has caused True arc failure.
      Randy