 Piston wrist pin retainers!?!? |
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| stugray |
 Aug 15 2012, 04:58 PM
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#1
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Advanced Member  Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None  |
The new "spiroloc" wrist pin retainers as driving me insane!
I got the KB pistons from EMW and they come with the new fancy spirolocs for wrist pin retainers. I just want some feedback about who thinks these are better than the plain old circlip retainer clips that come as stock. IMO the older rings are MUCH easier to install and remove than the spirolocs. I have spent an hour and many searches on the internet & youtube watching the spiroloc install but I still do not see how it can be done with the piston/cylinder up in the engine assembly. AND I am planning ahead. Once I assemble everything & measure my deck height, I am expecting to have to take all of the pistons off. Removing those spiroloc retainers looks like I will have caught turret's syndrome and ordered explosive devices online before removing just four of them. What am I missing?!? Stu |
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| stugray |
Aug 15 2012, 06:14 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
QUOTE BTW, DO NOT allow that engine to ping/detonate. Care to elaborate? I plan on running 9.5:1 at ~5600 ft. altitude (colorado) with 110 race gas. Dual 40 Webers and JR race cam. I know at least one team that has run the AA pistons at 13:1 for years. Are the KB pistons that much more delicate? Stu |
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| ChrisFoley |
Aug 16 2012, 07:45 AM
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#3
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I am Tangerine Racing Group: Members Posts: 7,990 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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QUOTE(stugray @ Aug 15 2012, 07:14 PM)  ... with 110 race gas. ... Why? 100 unleaded would work fine, and make more power. |
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Posts in this topic
stugray Piston wrist pin retainers!?!? Aug 15 2012, 04:58 PM
SLITS If you are assembling to measure, why put them in?... Aug 15 2012, 05:07 PM Vacca Rabite They are not hard once you get used to them.
Pull... Aug 15 2012, 05:22 PM DBCooper They stay in better. You wouldn't believe the... Aug 15 2012, 05:52 PM Krieger IIRC I did the two spiral locks that are next to e... Aug 15 2012, 05:53 PM stugray Thanks for the hints.
I was only testing to ma... Aug 15 2012, 06:02 PM McMark :agree: They pretty much covered it. I've fou... Aug 15 2012, 06:09 PM
The Cabinetmaker I stretch them about 3 inches. It makes the diamet... Aug 15 2012, 06:41 PM
McMark First comment, there are a LOT of KB engines out t... Aug 15 2012, 07:33 PM |
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