Any of you guys NOT running H S? any issue? i figure now i"ll put maybe 5000 a year on a car.I don't think i'll pay to have them put in. Oh, 67 327/300hp. THOUGHTS. i called myself searching..................
valve seats.... pay now or later but you will eventually have to do them or just buy a set of alloy heads?
If the motor is still together and the car is not going to be used as a daily driver, run the additive and don't worry about it. If you're building a motor, by all means have hardened valve seats installed or buy later heads, one less issue to deal with.
Have the hardened seats put in on the exhaust valves for sure, maybe even the intakes. If not later on you will probably end up doing so anyway. He said that he was thinking on not having them put in. That tells me he is building the engine.
depends on use...if you'll be towing with it, you want hardened seats. If you are going to go cruising on Saturday night when the weather is warm, the unhardened seats will last until after you die.
Title caught me off guard. I've got interior on my brain currently and thought this was gonna be about stiffening a too cushy seat- Carry on with the regularly scheduled programming I haven't yet had any problems with the engines that haven't been gone through but I do upgrade when the heads come off for another reason. Sent from my iPhone using The H.A.M.B. mobile app
I say do the hardened seats. My last Buick big block recessed the valves pretty bad after about 20k miles. It was a street/strip car that ran low 13's with 9.8:1 compression, nothing radical. Sent from my iPhone using The H.A.M.B. mobile app
When I saw that****le I too was thinking about sitting, especially after doing an Iron*****, for you non motorcyclists that is a minimum of 1000 miles in under 24 hours. Sorry, I got distracted
Thats ok I have interior questions for another thread.That is the one thing i have never tried to do. I'm gonna give it a shot sometime soon.
Five yrs and no problem. I use an additive with every tank and when I have extra leaded racing fuel, CP or SUNOCO I put in a gallon when filling up. Cruising only with some freeway.
As usual, Squirrel hits the nail right square on the head. 5000 miles per year of cruising, you'll put a lot of years on it before it becomes a problem.
yes, if the heads are i'd do it on the exhaust...last time for me about $100 this is what i found after tearing apart a 283 a few years ago http://i135.photobucket.com/albums/q152/g_vonruden/valve003.jpg
Thanks...but I was kind of hinting at the fact that many guys would be stretching to put 5k miles on their car, ever. I never tried any of the additives, because I don't know how I'd know if they were "working".
Lets not compare street rods/strip or modified cars to daily cruisers. Doing 5,000 miles a season is some heavy use for a one summer year. Adding an additive or not should not create any problems for a daily cruiser. Why remove the heads to install harden seats for this only reason. If rebuilding then it is a no excuse not to install HC.
arominus you 392 hemi may have hardened seat all ready most early hemi had hard sets after 1954 if not just the exhaust seat need to be changed
If the engine is apart why not, but if your not operating at extended high RPMs, towing or hauling heavy loads (is this in a working grain truck?) I've got to agree with squirrel and Blues4U. You'll most likely be fine. -Dave
Ok sorry, again i didn't give enough info. 327, been setting for several years, going to put in 32 coupe cause its period perfect for it.. And i may have to take heads off anyway because of valve spring with pressure on them for so long.Just was thinking about valve seats. Thought about an article i read by the late bill burnham, about hardened seats, years ago. He asked the question about why change valve seats, His opinon was keep driving UNTIL you need them ! with that being said, I wonder how many on here know who he was?? I know everyone will have a different opinion. I figure i'll give it a shot and see what happens
That was always my opinion,if it ain't broke don't fix it! I had that philosophy years ago when contemplating hardened seats in a '64 SS Nova I had But, if you have it down anyway change them
No hardened seats in the Henry J (yet) I never drive it more than 150 miles from home, probably 2000/3000 MAX per summer, and i use the vp vintage fuel and add the NO LEAD if and when i HAVE to... getting 35MPG on the highway (it has overdrive)
I wouldn't tear down a good motor just to install hardened seats, but if doing an overhaul the extra bucks for them is cheap insurance. Some motors need them worse than others; I had a '68 Ford FE that went 250K+, most of that on pump unleaded and while the valves eventually went bad, the seats were still decent when the motor was torn down. It finally quit running when it jumped time from all the nylon teeth falling off the cam gear.... LOL.
having hardened seats put in my 462s mainly cause it is puling a bus and doing a head rebuild I have put hundreds of thousands of miles on older engines without doing this without issues though I vote run it till it screws up
I have been driving my Y-block for about 16 years with the seats Ford put in them. This is a daily driver and I drive thru several states
I have a couple of LPG (propane) only fueled cars, they got the hardened exhaust seats when the heads got done, but before that, they ran fine just using the addative. I gave a sample of the addative to a chemical engineering friend who*****ysed it, and said it was around 98% diesel. I have a couple of other cars that have standard seats, which now get a squirt of "addative" when I fill up (100% diesel, about 1ml/litre of gasoline). So far so good.
Anyone have info about when each manufacturer went to hardened seats? Ford advertised them in the 1930s.
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