Vendors that stock SI valves

[Tennesseejed]

Does anyone know of a vendor that actually stocks SI valves?

 

I am trying to source one set each of the 8102E and 8001SG SI stainless valves (N42 valves). The folks at SI Valves told me they are out of the 8001SG (44mm/In.) until December. I called RPMRons and RPMMachine and they each drop ship directly from SI Valves and apparently do not carry stock.

 

I'd prefer to not wait until December to get my top N42 top end finished. I have googled for hours and found no other dealers. I know of the Ferrea valves which are more expensive. Courtesy is $20 each.

 

Isn't there a guy in Oregon who was selling good-quality stainless valves at a fair price? Or does anyone here on HybridZ has a new set for sale?

 

Suggestions and advice welcomed.

[Xnke]

NISMO sells SI valves. They are just NISMO prices. the ones I bought were the 46mm valves, and I cut them down to 44.5mm, because they were out of stock of the 44mm valves at the time.

 

The steel these valves are made from is TOUGH stuff. Carbide tooling ONLY!

[Tennesseejed]

NISMO sells SI valves. They are just NISMO prices. the ones I bought were the 46mm valves, and I cut them down to 44.5mm, because they were out of stock of the 44mm valves at the time.

 

The steel these valves are made from is TOUGH stuff. Carbide tooling ONLY!

 

Thanks for the response Xnke.

 

I think Coutesyparts.com includes the NISMO catalog, but I could be wrong.

 

Do you have a part number for the 46 mm valves? I don't mind cutting down some valves to fit, though I would want to buy the exhaust valves from the same manufacturer so the stem length is the same.

 

I also didn't see 46mm L6 vavles on the SI Valves webpage. Are you sure those 46mm valves came from SI?

[Xnke]

Yep, ordered them on the phone. I just called them up and asked what the options were for the Nissan L28, 1975-1978. They were out of stock replacement valves, and only had the race-prepped 46mm valves in stock. He split the difference in price for me, and I ordered them over the phone. SI valves is a good company to get stuff from, in my book. Don't go with NISMO for the source, since they mark them up to a crazy number. SI sold them to me for 10$ each, about the same as stock replacements go everywhere else.

 

The race-prepped valve is stock length, but has a larger head diameter and has been swirl polished. I cut the head down to 44.5mm and then since it was so thick, gently radiused the combustion chamber side of the valve, leaving a good margin. (if you go the same route, then you'll see that the valve margin goes from 1mm or so to 3mm or so...limit for replacement on an intake valve is .8mm..)

[Tennesseejed]

Well, I ended up going the same route as you Xnke. I gave up trying to find a vendor that stocks L6 valves from SI Valves and even NISMO dealers say it is a special order part so no joy there.

 

SI Valves sells a 46mm intake as p/n 8000SG. Oddly, it doesn't show up on their webpage so I would not have know about it without Xnke's suggestion. Thanks.

 

There is one other option if you want to go with SI Valves until they get another shipment of the stock 44mm intake swirl polish valves in December. SI Valve sells a 44mm blank as p/n 6108 which would need to be cut and grooved. Seemed less expensive to turn down the 46mm valves than work with the 44mm blanks.

 

FWIW, the direct price for SI Valves is up to $11.00, but still a very good deal.