What does a "valve-job" entail?
Thanks. Just trying to figure out if this is someone I can do
in my garage.
What does a "valve-job" entail?
Thanks. Just trying to figure out if this is someone I can do
in my garage.
...
no you can't do that in your garage unless you have a machine shop inside your garage.
mostly it is rebuild your cylinder head. taking your valves out and cleaning them or replacing them with a new ones. replacing valve guides.
Basically you want valves to be sited as tight as possible. 3 angle job is common for that purpose.
Alex.
That said, this is a often misunderstood term.Originally Posted by shepherd79
Sometimes it can be just lapping the valves in
Sometimes it can be just cleaning them up on the non seating surfaces
Sometimes it can be replacing or recutting valve seats and replace all valves
Sometime it can be checking all valves and just replacing the ones that are bent burnt etc.
Warning, ask for specific details when your are charged for these services.
yup i would rebuild the whole head 3 angle valve job is worth it also....you can also go crazy and get a 5 angle job but it might no help unless you are pushing some crazy hp
1989 Honda Accord LX-i
B18c1 swap since 7/2011
175whp and 132tq
Redzone tuned
The engine oil gets black-dark and smells like gasoline after only 1000 miles. Thus, I was thinking about a "valve-job." I'll most likely take the cylinder head off myself, and see how much work I can do myself. I know I can definitely "lap" the valves myself using a lapping stick. I don't think I can do the valve seal; I heard it's very difficult to do.
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sounds more like a piston ring that isnt sealing and creating a blow by situation, thus making the oil have combustion mixed with it and smell of gasoline. mine does that, but not as quickly as you say yours is doing. might also want to do a compression test just to see how well things are going in each cylinder.
Keep it HONDA. Or at least Asian.™
*Weber 32/36*Pacesetter Header*2.25 in. Cat Back exhaust*SE-i rear disk brakes
B18C swap ditched, A20 to be revived
Looking for K20/trans for ultimate swap
yeap, one of the piston rings worn out and it let gas to sip through and into the oil.
Alex.
yeah it might be cheaper to find a lower mile engine and swap it in
1989 Honda Accord LX-i
B18c1 swap since 7/2011
175whp and 132tq
Redzone tuned
Kinda hard to find a low mileage engine on a 18 year old car.
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My engine burns almost no oil. Wouldn't you think that worn rings would result in excessive oil consumption?
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not really you just have to look hard....i found mine with 136k runs like a champ...even after i abuse it and redlineing it every day. these engines last long if you take care of them. at least 250k
1989 Honda Accord LX-i
B18c1 swap since 7/2011
175whp and 132tq
Redzone tuned
is their a place to get larger valves for our cars? are those custom made of off another engine?
you can get them of any thing similar but you will have to grind them and bore the heads fo a match fit
took a whole year but i got the 100th post
yet only took a month to get the 200th
Dec. 05-Dec. 06
really... a fully modded head liekt hat... man i could imagine with cams and a b18 mani... some heads and mega squirt... like 190hp to the crank... who needs v-tech!
Everything is pretty much been said about valve job but a few things.
There is valve interference agle which is 1 degree difference in the valve seat & valve angle.
The valve must have a margin (tip of valve past the seat) of 1/32", without valve margin, the valve could overheat & burn.
Vavle spring squareness, free height, & tension are preformed on a good valve job too.
.
Spend the money and have a shop that is known for cylinder head work do yours. I had mine done that way and it cost me $435. The boiled the head, cleanded and did a 3 angle grind on the valves, put new valves seals in, milled the head, reasembled everything for that price.
That's a lot of money!
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thats cheap.....ive seen some people spend 1500 on just a head job....everything was built to racing specs tho
1989 Honda Accord LX-i
B18c1 swap since 7/2011
175whp and 132tq
Redzone tuned
Not if you need to get it done and don't have the skill or tools to do it yourself.
Like extortion.
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Messyhonda is right about getting a low mileage used engine might be cheaper than doing a valve job.
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I don't know too many people that can mill the head and boil it clean in their garage.
saw a rebuilt head on ebay for around $225..shipping is a killer, cheaper to get a head off a reasonable mile engine, but sounds to me like you are running rich precision machine work isn't cheap...how's compression and leakdown tests look? ( that's the car equiv of an blood pressure and stress test..you need to know this before you put a wrench on the car, you could do the head, and miss a cracked piston ring..lot of work and expense for nuthin.
Could a DIY him/erself do the compression and leak down tests?
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yes you can do compresion test at home. just go to autoparts store and pick up compression tool. it shouldn't take more than 30 minutes do to the whole thing.
make sure you have your fuel pump fuse pulled out and when you crank the engine push the gas pedal all the way to the floor for maximum air.
Alex.
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