Do we have the detailed dimensions for the stock 1500 SOHC X1/9 pistons listed anywhere? Basically I'm talking about all of the critical design specifications dimensionally. Thanks
Not the data I asked about. Those sources only offer very basic service data for diameters, ring size, etc. As I stated, I'm looking for detailed dimensions for the critical design specifications. Much more involved than general service specs. But thanks for the input anyway.General piston specs are listed in that book known as a "Factory Shop Manual". Also found in another odd place called a "Haynes Owners Workshop Manual" (pages 31-33 for basic [1300] piston design photos, pages 158-159 for 1500 piston specs).
Thanks Andy. I just searched through their site and found where this came from. This is the type of information I'm looking for, however it is for a high performance one with increased compression. Ideally I'd like to get the same information for a stock piston. But it is more than I had before.Is this what your looking for?
Enough detail to approach piston manufacturers about some special made items. Frankly I'm not positive how much info they need to be able to decide if they are interested and how much it will cost. But I figure it will be about what's in the pic (added to what we already know from the manual), but for a stock piston (that pic's for a high compression one). Thanks.What level of detail are you looking for?
Enough detail to approach piston manufacturers about some special made items. Frankly I'm not positive how much info they need to be able to decide if they are interested and how much it will cost. But I figure it will be about what's in the pic (added to what we already know from the manual), but for a stock piston (that pic's for a high compression one). Thanks.
I think the drawing above has the rings specs wrong. The thicker ring is most likely the bottom ring, not the first.Enough detail to approach piston manufacturers about some special made items. Frankly I'm not positive how much info they need to be able to decide if they are interested and how much it will cost. But I figure it will be about what's in the pic (added to what we already know from the manual), but for a stock piston (that pic's for a high compression one). Thanks.
I think the drawing above has the rings specs wrong. The thicker ring is most likely the bottom ring, not the first.
I don't have enough experience to design a custom piston myself so I rely on someone else to advise me. If you reach out to the piston manufacturer that you want to work with you might find that they have the information on hand that they need to make your custom pistons . You'll need to provide them with some basic info like bore size, and valve head diameters though.
They can also probably give you some good application specific suggestions about things like which rings to use and where to place them on the piston. (Hint, use a piston diameter that's common, that allows you to choose from a good selection of off the shelf rings. For example 87 mm. Folks like Total Seal will make custom rings for you, but if you're designing the piston you would want a pretty good reason to want to use something different than everyone else.)
If you have a custom dome shape that you want to replicate some piston manufactures can scan an example to replicate them.
A good piston manufacturer can also recommend a wrist pin, and a method to retain it.
You might also consider buying a spare set while you're having the custom set made.
What I'm really hoping is one of the piston makers have something existing that can be used to make what I want. For that matter they may already have exactly what I want. But as I stated I'll need something to show them in order to find out. This is for face to face meetings with all of the known piston manufacturers at the upcoming SEMA show. So having something in hand to illustrate the stock piston specs will be a big help.