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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Retightening head nuts/bolts at 600 mile service /cgi-bin/YaBB.pl?num=1442514224 Message started by rong on 09/17/15 at 11:23:44 |
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Title: Retightening head nuts/bolts at 600 mile service Post by rong on 09/17/15 at 11:23:44 I'm perplexed. (Very sorry for being so wordy.) Some people on this site have already responded to me via emails about taking off the head cover and retightening the head nuts/bolts to specification (pretty sure there are no bolts involved). Thanks. Feel free to respond again. I wanted to find out what others think, especially those who are in my situation. The situation: I have a new S40 and am close to the initial 600 mile service. I would like to do the service myself (I've had some tooling experience on previously owned bikes). Normally, I go by the book when it comes to the maintenance schedule. The regular initial Suzuki 600 mile maintenance (as well as ALL future scheduled maintenance services) require the usual: changing oil and filter, adjust valve timing, and other miscellaneous checks. But then it ALSO says to retighten down the 4 cylinder head nuts (Not only for the 600 mile service, but also for every future scheduled maintenance! ... ie every time the oil is changed, they say to retighten the head nuts)! I have the Suzuki service manual as well as the Chilton's manual. If I read them correctly, to retighten the head nuts requires that the valve head cover be removed, then the head nuts actually loosened, lubricated with oil (don't know why), and then retightened. Also, that famous 'seal cap' that seems to leak oil as time goes by must also be removed in order to tighten one of the head nuts. This whole situation is not only a lot of work, but it seems like it could actually create problems before there is one! The Suzuki service shop in town indicates that they do all of the service items that Suzuki requests at each regular service ... but I really wonder if they go to all of the trouble of taking off the head cover to retighten the head nuts at every service. There are also some external nuts around the engine cylinder that I could easily tighten ... anyone can see them by looking at the engine ... they are the 2 nuts that tighten the 'cylinder to the head' ... and the 2 nuts that tighten the 'cylinder to the block' ... But by only tightening them and not tightening the 4 head nuts, I fear that I might get 'something out of sinc'? Might this be correct? In summary, Is it really necessary to do this at the 600 mile service and at every regularly scheduled service in the future? Or is it ok to ignore this completely until the famous 'seal cap' begins to leak before getting into the engine head? Also, if I tighten only the external nuts (as described in the prevous paragraph) without retightening the 4 head nuts at the same time, will the retightening get out of sinc? Thanks for any suggestions and help, Ron G |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by KennyG on 09/17/15 at 11:42:11 Ron, Most of the dealers are going to change the oil. and we hope they can put the filter on correctly. Then they will listen to the engine run and determine that the valve adjustment is correct. $180.00 plus oil & parts. I did this myself, and I am now past 3600 miles and did the same service for 3600 miles. Everything sounds good. I have invested $20.00 in oil and $10.00 in filters. Some are going to disagree, but if everything is working good and sounds right you are better off leaving it alone. Somewhere after 10,00 miles I will check the cam chain and then decide if it is time to order the Verslagen fix. Unless something is broke don't fool with it until you are certain what needs to be done and how to do it. Kenny G |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by Serowbot on 09/17/15 at 12:05:12 Re-tightening is just an opportunity to break one off... Don't touch 'em if they ain't leakin'... :-?... 35k miles,.. and I haven't touched my nuts... (so proud)... :-?... |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by norm92de on 09/17/15 at 13:21:57 My sentiments exactly! I have a new s40 with just over a thousand miles on it. I have no intention of taking the "cap" off when it is running so nicely. My Suzuki dealer wanted $350 plus oil etc. for the first service. I don't think so! On top of which I never let anybody touch my bikes, which is one of the reasons I bought a simple bike with a carb. It is possible that I will have issues with the warranty but I think I have already blown that when I fitted a raptor -I hate vacuum petcocks- and adjusted the carb to eliminate the backfiring and hesitation. Plus I already have $350 in the kitty for future repairs ;D |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by youzguyz on 09/17/15 at 13:25:14 5046514C54414C57230 wrote:
I tried to touch my nuts once. They were so tight I was afraid they would crack.. |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by Dave on 09/17/15 at 13:54:22 5046514C54414C57230 wrote:
I touch my nuts frequently.....but never with a wrench in my hand. ;) |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by norm92de on 09/17/15 at 14:03:42 That might smart! ;D |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by rong on 09/18/15 at 12:24:54 Thanks everyone for your help! It really eases my mind. Your suggestions were exactly my thoughts. Checking for the Verslavy fix around 10,000 miles (Thanks Kenny G for confirming this). I've already purchased a raptor to eventually install ... And also have thought about the carb adjustment. (As you have done norm92de). Serowbot, 35,000 miles and running! ... a real confidence builder! Now about those 'nuts' .... ;) Thanks, Ron G |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by Dave on 09/19/15 at 05:02:53 4B56575E55584C54390 wrote:
Yep.....35,000 miles is a possibility. And he is only 103,000 miles behind Youzguys.....who has 138,000 miles on his! http://suzukisavage.com/cgi-bin/YaBB.pl?num=1391195461/15#15 |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by Ed L. on 09/19/15 at 10:16:14 I have around 11,000 miles on my bike, never tightened the head bolts and ride a bit on the hard side. Needed a cam chain adjuster at 10K (16.5mm out) and also put in a stage one performance cam since I hade the engine opened up. It always seemed to me that retightening the head bolts was a good way to break something. A lot of the hardware on the bike isn't really good quality and can break when you least want it to. It's your bike, follow your soul with it. :) |
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Title: Re: Retightening head nuts/bolts at 600 mile servi Post by justin_o_guy2 on 09/19/15 at 20:08:01 It's the only engine I'm aware of that recommend s doing that. I did the cam, and chain, I was RIGHT There,, but I didn't touch it.. You can't go in and torque it, unless you break it loose,, it's just Dumb. And if you want me to believe that the dealership that charges the Noob who can't do their own service work actually Does this, well, it's gonna be a VERY cold day in a place most consider to be always Very hot... |
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