S2000 Under The Hood S2000 Technical and Mechanical discussions.

Bent Valve options?

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Old Oct 17, 2005 | 05:38 PM
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Default Bent Valve options?

To keep it short for now........I have a bent valve in cylinder 4.. due to water

need help with options.... Hendrick Honda of Charlotte has the car... and they want to break down the engine (380$) and send the head over to the shop and get it tested..( is that really needed??) and then go from there..mo money mo money$$$$

the car was running ok with a little smoke from time to time but it has always smoked a little... and it had a ticking sound that would increase with the revving under load.
What are my options??

just drive the car??
just replace the bent valve without sending in the head for testing...
take the car home take the engine out and send it in to www.ericsracing.com to get a full rebuild .....( don't know all the info on this option but will soon)

any other options??? or engine rebuild places.. recommeded..just want to keep cost down and maybe get a few hp if possible on the rebuild.. up to 3 grand $$$$$

I do have a CAI and Hondata intake manifold gasket..(someone here said something about plugging a drain hose that drains water on the CAI where is it???)


if you need the whole story here it is it rained for 4 days straight.. and car was running just fine the night before... went to start it and it revved up to 3k like usual and then died... I pushed the start button again and floored the gas to just keep it sputtering along then it died completely....

took it to honda they cleaned up the spark plugs.. they said it ran pretty rough at first and it should get better with time.. drove it for a week and it has gotten better but still a little smoke and the clickin..... I preformed a valve adjustment and everything was in spec... sent it back to honda... they cleaned it checked valves..(in spec just wanted to check my work) and they said there was a bad seal on one of the fuel injectors... had that replaced... and then they found the bent valve...

what took them so long....?? why did they give it back to me in the first time with it running so bad?????
were they just stringing me along for more money???

please pm me or tell me who to talk to... need to move fast...

thanks for the help....
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Old Oct 17, 2005 | 06:28 PM
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throw me a bone please..... even if it is a small one
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Old Oct 18, 2005 | 09:34 AM
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Here is some CAI information for you:

https://www.s2ki.com/forums/index.ph...pic=284873&hl=

Beyond that, anytime spark plugs are mentioned in a pre-03 S2000 the next question is whether or not the recall was done on it. The old ones (00-02) could come loose and break up into the cylinder. If you truly have a bent valve due to hydrolock this is unrelated but probably worth mentioning.

I agree that when you told them the details about the CAI and rain, hydrolock should have been the first thing they should have considered. Myself, I don't trust their diagnosis. You don't know where to start untill you really know what the problem is. And the ticking before all this began raises a flag also. So many questions.
I would start with a different shop, a leakdown-compression test, and a boroscope. Then maybe you will have a better idea what the hell is (and has been) going on in there. Any way you go, driving it is probably a bad idea unless you want to really end up spending some money. Good luck and keep us informed.
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Old Oct 18, 2005 | 09:54 AM
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Charlotte probably puts you too far away from Crown Honda in Greensboro... But I recently had the misfortune of my timing chain gear slipping off my lower crank at highway speeds. Needless to say, my car was DOA and needed compassion and know-how. Service wrecker took me to Crown Honda. They diagnosed my problem (valves bent when timing lost), had head pulled and inspected by their associated machine shop, etc. Ultimately, I opted to replace all upper valve train items, timing chain, etc. Seems lower end was unaffected.

So my only real bone I can throw you is a solid recommendation for Crown Honda's service center.

As for the rest? You need to perform a leakdown and a compression test on your motor asap. Head definitely needs to be inspected. That ticking you're hearing (especially if louder than normal) could be a bent valve(s) rubbing/tapping against the head itself. If the head is damaged, it could require anything from machining to outright replacement.

- Dave
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Old Oct 18, 2005 | 10:56 AM
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Hey there buddy, I feel your pain. I have all my exhaust valves bent. I was going to throw a new engine, rebuold it for more power for all sorts of money. Then I realized that wasnt smart and just rebuild it almost back to stock specs. Im getting all new valves, retainers, head gasket and machine the head. All this together is going to cost me about $800-900, I wouldnt go to honda for this as they will charge alot of money. My cuzin is sponcered by a few companies and local shops so I'm getting a good deal but im sure you can still get a good deal also.
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Old Oct 18, 2005 | 12:18 PM
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^^^ kayvan is correct. Even with hardtopguy valvetrain parts pricing...it still cost me just over $2000 to have Crown's service department do the deed. The machine shop's labor was very little of that total (~ $150 or so...but again, the head was diagnosed as not requiring any machining). I opted to replace ALL valvetrain parts as my car had, at that time 117K miles...so just as well to replace all since all were worn that much...although only a few valves were determined to be bent and none were broken. But again, it was easily a $2K+ exercise as far as parts and labor go.

- Dave
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Old Oct 18, 2005 | 02:43 PM
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Just to clear one thing up APEX2K ... the clicking started after the water damage...as far as spark plugs.. they were changed.... sorry if I was miss leading... there has been some ticking from the valves when cold but not when warmed up.. 60k miles on her (all me)


Been on the phone a lot today.. and have decided to go with 2-5k $$ in engine work... (might be a mistake but .... it is the route I am taking until I change my mind)

First ericksracing is going to give me an estimate.. for a couple different N/A options... These guys really know there hondas.... But they might be a little to intense for me...

Second and The option I might go with is through
http://www.alaniztechnologies.com/f20c1parts.html

They have a head job for 2,300 which sounds like the best possibility.. take a look if some one whats to give me a heads up on a better option (what or what not to do)

Towing my car back from honda... putting the car in the garage and pulling the engine to send her on her marry way...

I feel it is like sending your wife off for a boob job???????? please do not take that the wrong way..... I still wish none of this ever happened

Thanks again everyone...
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Old Oct 18, 2005 | 04:15 PM
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So to add more Facts...

Honda tech told me that the valve(s) is not moving up in down properly..one or both valves on the intake side of cylinder 4. Honda does not have the ability to take it any further... they want to send it to the head shop.... I could probably take it off and send it to the head shop myself... and save 800$ but would rather send the whole engine to the shop that will do the work (where ever that may be)

They have not taken the head off to inspect the top of the piston to see if it had rotated. They said that the noise is coming from the top of the engine..(head)
No compression test, or leakdown test.. the car was running for about 200 miles and seemed to only have lost 5-10 hp.. but a big deal to me.. along with more than usual white smoke... only at take offs.. when it is bogged...

It did smoke before..but that could have been because it was running rich... (just an idea.. from the black stuff on the rear bumper) I could be wrong...

If I am going to spend money I would rather spend it on a build...instead of testing something that will be included in the build or tested in the build.. or taken care of by the build... like polishing and porting.. and so on.....

I am sort of new so maybe those tests are needed before I even send my motor off to CA. I am sure that I will have the information needed to precede either through input from S2KI members or the shops that I have and will be talking with.

The CAI is an Injen like it says at the bottom of the post.. in the sig
I will create a make-shift cover that will prevent any water from getting to it from the top and sides.. while my engine is away.

The fuel injector that had a bad seal was on cylinder 2

Please ask any questions ....to help in sorting out the issues .. and creating a clear path to safely revving at 9150k rpms everyday...

Thanks for the pm's...xviper.. I need all the help I can get.. and then some....
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Old Oct 18, 2005 | 04:23 PM
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Just talked with my man at Alaniz and he is going to price some options out for me in the next couple of days...

option 1 N/A.... very little gains..
option 2 FI.... set up the engine so in a year.. after recovering from the cost.. I can put a S/C on and the engine will be ready... I probable will not see any gains until the S/C which is ok

Either way I will have To go with AEM EMS ( anyone know where to get the best deal. on it... I will do a search)... but I will not have to tune it... they will send me the programs.. and I will load them in according to all my specs..... No Tech cost

I will post options..
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Old Oct 18, 2005 | 06:05 PM
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i think the first thing id do after hydro'ing my car would be to switch intakes.

but thats just me
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