Im in the process of making some 80mm and 84mm honda oil pump gears made out of 4340 steel.Im doing this because people like prodrive make cheap oil pump gears that cost $300 and break easier than factory oil pump gears.They give no warranty and dont say what grade material the gears are made of.I plan on giving a lifetime warranty and shooting for a cost of $200 along with a free shim kit to go with it.Do you think these will sell? Is there a demand for these? I dont want to waste my money. Im having these made on a CNC machine.Thanks

 

i would be interested but i dont know about being the first

 

4340 billet steel will be extremely strong.Wear characteristics should be great .Heat tolerance will be just fine.I will measure them to make sure they have the same specs as the factory oil pump gears.Just looking to make a better product than procrap.I'll update to let people know how things go.Might take me a few months though.Once I have these made I'll be testing them in my own turbo car.These should hold up to 700hp and hopefully kill one of the weak links in High reving and high horsepower hondas.

 

since it would be a prottype if it did break from poor manufacuring would you warrenty the rest of the motor due to a faulty part?

 

Not one person racing industry will warranty a motor on an aftermarket part.Just putting a generic air filter on your car and having anything mechanical go wrong with the engine and the dealer will give you a hard time.Another reason is that there are people that will blow a motor blame it on the part they put in. Break it on purpose or installed it wrong or didnt tighten screws bolts ect whatever they have to do to get a free motor.Thats why used B motors only have start up warranties.

To be quit honest any oil pump gear will fail if the rotating assembly is horribly out of balance.Im simply making a better product.Not some no name steel chinese part.

I will inspect every part myself.They will not break because of poor manufacturing.Will be made of Billet(solid block of steel) grade 4340 CNC'ed to factory specs.This will be a small business.Im not making a few of these.

Every business out there is based on reputation. Sorry to say but way too many Flakes in the import scene from my experience.From big to small and a few that really have their **** together.


Modified by Clone at 11:53 PM 5/16/2005

 

well the way i see it is you might need to research a little more.

kinda liek the OBX cams. its to spec. makes good power. but wore the hell out of the vtec lobes. etcc due to metal hardness. how do you know it wont happen with the pump gears/

 

Did the research.4340 steel is used in transmission gears aircraft parts oil pump gears. Why would I sell a product I did not research? It has great wear characteristics. I would not sell something that would wear out prematurely contaminate the oil supply with metal shavings and destroy the bearings. I came here asking if there was a demand and if people are interested. It also comes down to cost 4340 is higher up in the food chain. People throw in prodrive oil pump gears in not knowing what grade they are made out of other than steel.Prodrive does not state the material grade because well its cheap steel. If prodrive makes the oil pump gear out of STEEL and Honda makes the oil pump gear out of sintered STEEL and I make my oil pump gear out of STEEL and neither Honda nor prodrive have wear issues.Case closed.


Modified by Clone at 12:54 AM 5/17/2005

 

I wouldn't be so confident in a product you haven't even tested yet. It would help to look into surface treatments of the metal too (cryogenic treatment, etc.) because the metal in and of itself isn't that much of a step up when it comes to strength. Some steels also have problems going through heat cycles while others might have a higher tensile strength but can be brittle while something with a lower tensile strength can be a little bit softer and not break into large chunks that can really mess up a motor (as opposed to little flakes screwing up bearings you could have cracked cylinder walls instead :fun.

Spend some $ on R&D and worry about making the $ back once you know without a doubt you're selling a quality product. If you can't sacrifice the initial debt maybe you shouldn't be pushing a product that doesn't even exist yet.

 

Your absolutly right. Not too worried because this is not an experiment this is proven metal.If this was a cast product id be worried.The only why to screw billet up is if the metal itself has perosity in it.Like I said before 4340 is used in oil pumps billet rods and takes heat perfectly fine.I will be breaking these to see how strong they are.I will also break the factory oil pump gear in testing.If im not happy with them I plan on adding 1mm thickness to the gears because they always break in the thinnest spot everytime.

 

I like the idea...

 

Thanks Im waiting on quotes right now from CNC machinest.May take weeks to get prices but I will get it done.

 

 

put me down for one once they are tested...

 

Bah u will have no probs selling once you do some testing Find s few guys boosted and a few NA and get them to test them out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Clone &raquo;</TD></TR><TR><TD CLASS="quote">4340 billet steel will be extremely strong.Wear characteristics should be great .Heat tolerance will be just fine.I will measure them to make sure they have the same specs as the factory oil pump gears.Just looking to make a better product than procrap.I'll update to let people know how things go.Might take me a few months though.Once I have these made I'll be testing them in my own turbo car.These should hold up to 700hp and hopefully kill one of the weak links in High reving and high horsepower hondas.</TD></TR></TABLE>

True 4340 is used on trans gears but not on a G-Rotor. Have a Honda gear sent to a metalurgest and you will find out that its not a single alloy. there is alot of engineering into that part. A G-Rotor also has a VERY tight clearances, so unless you have a VERY good CMM i would not make it, also a CNC would not be the best way to make it unless your machinist can hold .0005

 

Cant do much testing till my grant money rolls in.I was born with a wooden spoon in my mouth.Also remeber most parts are made using the cheapest material that will hold up to save on cost.Most Hondas are cheap cars but I love them.They do have weaklinks even all motor.Cams seals,distributor ignitor,rubberband timing belt they could have used gears on the cam crank.Lack of rear wheel drive saves them so much money to do away with a geared rear end ,driveshaft.Why they didnt put it in the back like a volkswagon I'll never understand.


Modified by Clone at 1:43 PM 5/18/2005

 

Great. i wish you the best of luck

 

This is interesting, best of luck to you and your pusuit.

 

I would buy one if its tested.