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04-06-2022, 02:02 PM | #1 |
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RCM High Grip Timing Belt Tensioner
Anyone use the new RCM High Grip Timing Belt Tensioner? Any great benefits vs just the new style OEM tensioner and the small idler bearing. What I can see is that its a side tensioner vs up/down newer style. How more reliable is it? Can I just replace the Subaru Belt Tension PN 13068AA051 when I need a new one on this kit?
How much longer do you think Subaru will be manufacturing and selling the OLD style tensioner and the timing tensioner pulley for? Don't want to buy one and then not be able to locate just the tensioner. What I see is that to replace the older style tensioner and the Timing Tensioner Pulley, it will cost you a extra $100 then just getting the newer style tensioner. https://www.flatironstuning.com/rcm-...belt-tensioner
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Last edited by BlackFighter; 04-06-2022 at 03:48 PM. |
04-06-2022, 03:24 PM | #2 |
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of the millions and millions of cars with timing belts, I've never once heard of someone's tensioner failing in operation
That unit looks nice, but probably not necessary at all |
04-06-2022, 04:01 PM | #3 | |
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I'm also sure that whoever skipped timing was due to a belt tensioner either going bad or went bad. |
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04-06-2022, 04:38 PM | #4 |
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I have had the new style fail loud, no skipped teeth but it was rattling on ej253
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04-06-2022, 04:59 PM | #5 | |
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04-07-2022, 09:58 AM | #6 |
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Conversely I've seen multiple RCM or similar style tensioners fail. If you look at the total number of OEM Subaru vs total number of aftermarket, then hear about the failures....OEM is fine.
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04-07-2022, 10:07 AM | #7 | ||
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Last edited by BlackFighter; 04-07-2022 at 11:51 AM. |
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04-07-2022, 03:51 PM | #8 |
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The “Lexus” icon is the symbol for Fuji industries
Aisin “style” tensioners are not aisin tensioners , or oem Subaru for that matter Most tensioner failures are from improper install procedures , some are from blatant abuse or just full on crazy competition, not meaning some hard parking saggy pants flatbiller hanging at sonic drive with their vaping biz cards suck in the stretched tires beads that hangs it on the red limiter when his fav hip hop song comes on , I mean actual competition with purpose built cars that compete The rcm unit looks very nice and it’s claims to better keep time in high rpm or while used with sequential boxes looks good to me , I have not heard of any failures other than improperly installed ones with the rcm unit The blatant design ripoff of the rcm high grip tensioner by iag has had not so stellar result though In my opinion use an oem Subaru or aisin and the right process to install , or the original rcm high grip , not a failure prone multi time revisioned rip off Btw , Have you seen the solid exhaust gears from rcm paul ? |
04-07-2022, 04:13 PM | #9 | |||
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Hey Mike, LOL you really hate car meets at sonic, don't you LMAO
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You talking about these? https://rogerclarkmotorsport.co.uk/c...lley-kit-rh-lh Quote:
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Last edited by BlackFighter; 04-07-2022 at 04:26 PM. |
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04-07-2022, 04:21 PM | #10 |
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Yep. And the assclowns that do stupid ****e that ruin it for the real peeps
& Yep, Flatirons has them |
04-08-2022, 06:48 AM | #11 | |
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awesome |
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04-08-2022, 08:36 AM | #12 | |
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Looks like that thread was deleted? |
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04-08-2022, 09:27 AM | #13 | |
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Ya im not to concerned with Aisin, i still might go ahead and use it, my main question was, how much better is the older style tensioner, especially at high RPMS since that's where ill be running my engine at most of the time on the track. |
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04-08-2022, 07:14 PM | #14 |
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It’s not the old style tensioner
It’s the best of both worlds according to rcm |
04-15-2022, 07:35 AM | #15 | |
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We don't build a ton of engines, but we're also not making crazy power. 760whp was the highest on a GD, and 600whp on a GR and VA. Stock belts, tensioners and guides were always used. The only deviation is that I like to use the LIC eccentric idlers to time the cams. Never had an issue using those, but have heard of newer variants causing issues. We did use the 'Performance' or 'racing' Gates belt once. Noticed nothing different. I'm sure at some level they can be beneficial, but I think most fall prey to the perceived marketing 'need' for them. |
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04-15-2022, 10:05 AM | #16 | |
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04-15-2022, 11:20 AM | #17 | ||
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I was fine with using the regular OEM tensioner but the RCM one caught my eye because they claim "An extremely worthwhile modification on all high revving engines". The EJ257 already come with small idler bearing, but they say "2 piece Subaru timing belt tensioner system as it is more reliable than the later single piece tensioner". So any one know how and why the 2 piece is more reliable? I'm sure I'm splitting hairs here, but always willing to learn something new if I can. Last edited by BlackFighter; 04-15-2022 at 11:29 AM. |
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04-15-2022, 01:39 PM | #18 | |
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Are you sure you're talking about an EJ engine? 5,000 RPM powerband is something I've never seen a Subaru come even remotely close to. If it's going to live on track, the RPM swing is going to be 2,500-3,000 RPMs max generally. |
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04-15-2022, 06:44 PM | #19 |
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Well maybe not as much as 9000 but definitely 8500+ rpms. It's a 2.35 de-stroker with a gt3582 turbo on e85 on a circuit track, not drag. Depending on the track, plan to keep the car in gear taking a turn, and then just floor it out of a turn. Hard to explain.
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04-19-2022, 07:29 PM | #20 |
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I've never heard of an RCM failure. IIRC IAG had a relatively low percentage failure but they also weren't on the market long.
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04-19-2022, 08:08 PM | #21 |
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04-19-2022, 09:24 PM | #22 |
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How many destroker 75mm crank 2-4mm rod , 99.5 - 101.6 bore motors have you played with Chris ?
You might like what you find there It’s 2.34 Paul The 2.35 is a 2.5 crank in a 2.2 case Details |
04-20-2022, 07:14 AM | #23 | |
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I've never had a need personally, but tend to do things differently with the bigger power setups I've done, and they've always had a powerband wider than necessary for the job. |
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04-20-2022, 01:42 PM | #24 | |
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04-22-2022, 03:10 PM | #25 |
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