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Probably should have done this while the engine was down #3246975 07/24/24 10:44 AM 07/24/24 10:44 AM
Joined: Dec 2021 Posts: 1,296 Loudoun County, VA Brad_Haak OP pro stock
Brad_Haak OP pro stock Joined: Dec 2021 Posts: 1,296 Loudoun County, VA	After the block was re-honed for the 2nd time, the piston-to-wall clearance w/ my Ross pistons was up to .006-.007". I thought about putting on coatings to reduce the skirt clearance, but wasn't sure if it was worth it at the time. https://www.youtube.com/watch?v=0eBkoM_RtDA https://www.youtube.com/watch?v=M9UTOUZOD2E 2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft) 1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)

Re: Probably should have done this while the engine was down [Re: Brad_Haak] #3246979 07/24/24 11:00 AM 07/24/24 11:00 AM
Joined: Aug 2011 Posts: 2,904 Pattison Texas CSK master
CSK master Joined: Aug 2011 Posts: 2,904 Pattison Texas	Thanks for sharing this 1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5

Re: Probably should have done this while the engine was down [Re: CSK] #3246989 07/24/24 12:19 PM 07/24/24 12:19 PM
Joined: Jan 2003 Posts: 2,316 NE Ohio DoubleD top fuel
DoubleD top fuel Joined: Jan 2003 Posts: 2,316 NE Ohio	abradable coatings are cutting edge and really make a difference - Line2Line did mine on the freshen up - side coating on the skirts and the top thermal barrier. I would even coat new pistons in any build I do going forward

Re: Probably should have done this while the engine was down [Re: Brad_Haak] #3246990 07/24/24 12:26 PM 07/24/24 12:26 PM
Joined: Jan 2003 Posts: 2,969 A shed in England Tig master
Tig master Joined: Jan 2003 Posts: 2,969 A shed in England	Is this stuff different to the normal moly coated skirts you can get ? We got our Diamond pistons skirts coated from them, as after numerous rebuild / hones our piston clearance was on the larger side. '74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03

Re: Probably should have done this while the engine was down [Re: Tig] #3246994 07/24/24 12:33 PM 07/24/24 12:33 PM
Joined: Jan 2003 Posts: 19,522 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,522 Las Vegas	We use Line to Line for freshen ups frequently. Especially when customer doesn't need or want to spend the $$ for new pistons. "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Re: Probably should have done this while the engine was down [Re: Brad_Haak] #3246995 07/24/24 12:34 PM 07/24/24 12:34 PM
Joined: Aug 2003 Posts: 43,637 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,637 Bend,OR USA	All of the KB Icon piston sets I've bought and used since around two years ago come with that on them without asking for it Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Probably should have done this while the engine was down [Re: Tig] #3247002 07/24/24 01:02 PM 07/24/24 01:02 PM
Joined: Jan 2003 Posts: 2,316 NE Ohio DoubleD top fuel
DoubleD top fuel Joined: Jan 2003 Posts: 2,316 NE Ohio	The Line2Line abradable coatings are different from the standard moly coating that many pistons come with today

Re: Probably should have done this while the engine was down [Re: Brad_Haak] #3247094 07/24/24 07:44 PM 07/24/24 07:44 PM
Joined: Jan 2003 Posts: 31,189 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,189 Oregon	We use piston coatings all the time on refresh builds. Drag or circle track engines where everything looks good. Just hone it another thou or two and send the pistons out for coating. Saves some money and usually saves some time. Seems to work just fine.

Re: Probably should have done this while the engine was down [Re: Brad_Haak] #3247153 07/25/24 05:22 AM 07/25/24 05:22 AM
Joined: Jan 2003 Posts: 10,072 Frostbitefalls MN (Rocky&Bullw... gregsdart I Live Here
gregsdart I Live Here Joined: Jan 2003 Posts: 10,072 Frostbitefalls MN (Rocky&Bullw...	I did a set for 4.500 bore pistons , built up for 4.5043 by Line2line. Worked great, and that 550 cube 440-1 alky motor made 926 hp at 7200 rpm. They can go as much as .020 overbore. Each .006 increase beyond the first is a bit more$$. Last edited by gregsdart; 07/25/24 05:25 AM. 8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky

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