Subject	I replaced the noisy VTCs with a newer set of used VTCs
Posted by	Ash's Z on September 26, 2006 at 10:00 PM
	This message has been viewed 251 times.
In Reply To	Don't let the VTEC kids know!!!! posted by TBlakeZ (NorCal) on September 26, 2006 at 09:53 PM
Message	that I had here from another motor. Making them adjustable wont get rid of the noise. The noise, I suspect, is coming from the internal helical gear developing slop over time. The valvesprings load the cam during valve opening and once the cam lobes peak and roll to the downside of valveclosing, the spring tension accelerates the camshaft and the slop in the helical gear is taken up to its end, causing the noise. I started the engine for a few seconds after putting the belt back on (no water pump, radiator, hoses, t-belt covers, etc) long enough to build some oil pressure and the replacement VTCs aren't rattling. [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	AshsZ-II Ultimate Street Z: OEM VTC Upgrade +++ >>>> - Ash's Z 21:37:10 09/26/06 very nice - aliaz 21:49:45 09/26/06 Don't let the VTEC kids know!!!! - TBlakeZ (NorCal) 21:53:33 09/26/06 I replaced the noisy VTCs with a newer set of used VTCs - Ash's Z 22:00:30 09/26/06 Good to know, thanks for the information. - TBlakeZ (NorCal) 22:10:57 09/26/06 I think it's mainly an issue when using aftermarket - aliaz 22:15:14 09/26/06 It will happen with OEM springs, just takes longer. - Ash's Z 22:18:22 09/26/06 Mine are clacking now.. 90k miles ,stock cams, springs. - Shawn300zTT GT28R MD 02:32:44 09/27/06 bend over - aliaz 07:40:37 09/27/06 omg.. screw that.. - Shawn300zTT GT28R MD 12:41:50 09/27/06 The VTC gear on the front of the motor that the t-belt - Ash's Z 14:41:45 09/27/06 oh ok.. thanks.. I can't believe they cost that damn much. (n/m) - Shawn300zTT GT28R MD 16:12:00 09/27/06 VTF... (n/m) - nizmoGTR 22:02:25 09/26/06 I was hoping to keep it in general as it relates to the - Ash's Z 22:08:57 09/26/06 Probably be a good Idea... (n/m) - RedBeauty84zx (San Antonio) 00:24:59 09/27/06 would an NA have much of a benefit from this? (n/m) - Z_LiFe 22:26:43 09/26/06 Good question, I know it will make a difference but I can't - Ash's Z 22:27:58 09/26/06 I'll be willing to give it a try - Z_LiFe 22:35:45 09/26/06 Sounds like a plan. Did you receive the new EPROM yet? (n/m) - Ash's Z 22:37:13 09/26/06 oh yeah got it today safely in perfect shape. Thanks again (n/m) - Z_LiFe 22:42:30 09/26/06 will the stock timing covers still fit with the extra nut - Z_LiFe 23:25:07 09/26/06 No, they dont. I cut out openings almost as large as the - Ash's Z 10:17:33 09/27/06 ohh ohhh i got like 20 welder:) - suprakillinz 22:35:15 09/26/06 Yes, you can use a 1994-1995 camshaft in a previous - Ash's Z 22:40:13 09/26/06 looks awesome ash, but i couldn't help laughing at this>>>> - Jimmys2+2(SoFL) 22:41:01 09/26/06 LOL, I'd like to think I'm a well-rounded enginerd. - Ash's Z 22:46:20 09/26/06 good work as always (n/m) - ARA300ZX 22:42:21 09/26/06 Fascinating........ When are you going to get the air ducts - 240Z FeO2 22:46:42 09/26/06 Thanks - - Ash's Z 22:51:21 09/26/06 inquiring minds... (n/m) - Spee 23:34:19 09/26/06 Wondered where you've been. Projects keeping you busy? (n/m) - TTFairladyZ 23:40:04 09/26/06 do you know how long the 94-95 cam gears usually last - PearlWhite300zx 00:20:14 09/27/06 depends on their prior life - aliaz 00:49:06 09/27/06 you replaced with brand new and it happend? (n/m) - Shawn300zTT GT28R MD 03:26:39 09/27/06 no they were used - aliaz 07:43:34 09/27/06 Re: AshsZ-II Ultimate Street Z: OEM VTC Upgrade +++ >>>> - Gho32 00:51:51 09/27/06 It isn't pre-boost, no. I wouldn't call it excessive, - Ash's Z 10:27:11 09/27/06 oo nice job ash.. looks like a fun mod. hey ive been trying - fst300zx 02:41:26 09/27/06 me too :) (n/m) - JaffaUK 04:05:36 09/27/06 Can you tell if they are worn by just looking at them? (n/m) - Shawn300zTT GT28R MD 03:26:14 09/27/06 not unless they are leaking (n/m) - aliaz 07:42:07 09/27/06 I've been running 1 pre-94 and 1 post-94 4 100K on OEM cams> - my91z 05:54:56 09/27/06 maybe they broke the cam (n/m) - SpecNATT (Houston) 20:26:20 09/27/06 And it has worked great for 100,000 miles since then? Not. (n/m) - my91z 06:43:20 09/28/06 Scary, I've been working on my gears as well. - Woody75 (Denver) 09:19:54 09/27/06 I probably will get adjustable exhaust cam gears too. - Ash's Z 10:31:56 09/27/06 Have you tried a new set of front tensioner springs? - Spddracer 12:07:39 09/27/06 I am using a new set of the JWT VTC springs. (n/m) - Ash's Z 14:41:00 09/27/06 and the 17mm nuts cleared the timing covers? (n/m) - SpecNATT (Houston) 20:24:13 09/27/06 Re: and the 17mm nuts cleared the timing covers? - Ash's Z 13:59:15 09/28/06
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