Xceldyne Valves?

[madmikeracing]

I been using Black Diamond Kibble Whites and heard of this company. What you guys using for big valves? Anyone use any of these valves fro mthis Comp-any? The reason I ask is I have heard from some guys that china makes lots of stuff now gets repackaged and sold as ,,,,,, ,,,,,, I don't like to support china but North America gets my money if I have anything to say bout it. Also some quality from china simply sucks period!! thanks Mike

 

[trippivot]

run whatever dohcbikes says to run

 

[Fjbj40]

run whatever dohcbikes says to run

LOL! Been watching those threads

 

[rapidray]

run whatever dohcbikes says to run

AaaaaaaaaHAHAHAHAHAHAHAHAHAHAHAHA!!!!!
Ray.

 

[madmikeracing]

Is that what you do Trip???

 

[trippivot]

so... don't get mad but my valves come out of N Korea. lol! no kibble and ape usually - schnitz has ferrera on their website..

 

[madmikeracing]

MAD ? No not at all. I have a blast on these forums, I always enjoy a good laugh!!! Cheap entertainment also and sometimes I learn something, Its great, I do most all my own work, I eventually find out what works and what doesn't, So many products out there, some are poor quality and some are better. But I still remember starting out back in the eighties and how hard I worked for my eight second runs, Now going faster is my goal but the old gs s are kinda maxed out due to their age. I do like the star engines and heads but I wont spend that much on a GS , The V and Hines valves interested me . Going to try some custom titanium , Shall see how they work Out. I also like the DLC coatings and am a firm believer in them. Also the new NOS system looks quite nice and a 250 shot may make the old girl wake up. Shall see, Thanks Mike

 

[trippivot]

stick with stainless

stick with stainless

I have titanium intakes on my fast bike but that is not what makes you fast. #1 titanium is expensive. #2 titanium is lighter and saves your valve springs on big lift cams - makes the cam lobe happier because less friction hurts less. special seats is a wise choice also. exotic yes but making a faster engine -no. longer lasting valve spring life -yes, less cam lobe wear -yes

fast is a term used incorrectly - I say that because my fast is not your fast - neither one of us are promod fast,, say like 3.8 in the 8th. why would I say that? because budget is a factor- and by you(madmike)saying you are not going to spend that much on a GS - defines where you are going to end up.

head / engine package as a matched pair is where your success is going to come from. a huge head on a little low comp engine puts the power too far up in the rev range and your crank will suffer -- a small head on a huge engine makes tons of torque -- well torque is nice but torque breaks parts faster than excessive rpms' - it is about matching parts to achieve the goal. general terms? street - street/race - race/street - full race show - full race drag - full race road course - full race hill climb - full race tractor pull - mini sprint oval - Gs engines are so versatile , that is the easy part -the hard part? weight and ..... the chassis! the frame has to help - you can build all the engine you can afford and get nowhere because of your chassis.

1327/1428 cc 13 or more to 1 -- 29/24mm 1150 casting with .348 drop ins or (G13/G7) - fed by 38 or 40mm mikunis' in a small tire bike that weighs 400# can dive into the 8's - put a little nitrous and a dyna2000 into the equation you'll be amazed what can get done on stock valve seats and a bunch of second hand parts - that will live for years. - how much you spend(and what you spend it on) is going to be a limiting factor.

or build a 1570 /16xx/17xx cap it with a vortexII and stuff 48mm lectrons on it to do the same times but live half as long and cost twice as much.

rule #1 on deciding how to design your head - how you going to feed it ? naturally aspirated , some nitrous, all nitrous, turbo? - (and the eternal constant) what are you willing to spend? look into skulled heads - really cool stuff there.

nitrous and titanium don't mix in my approach to building (thermal shock to the alloy) -- and remember to install softer seats in the head when using titanium. bux delux...$$$

when in doubt about keeping your money American and buying new parts - call APE - btw -the guys on the phone at ape ? don't ask them any thing technical. - save that for here.

 

[madmikeracing]

I looked for titanium beehive type springs for one of the engines years ago but gave up. I like the idea of the newer beehive spring design. Lots of things to fool with that's for sure. I really enjoy these forums , Later Mike

 

[madmikeracing]

These valves really interest me. They are titanium out of a gs ,Saw them on an ad for sale quite a long time ago, Titanium perhaps blanks and machined yourself? Are they available like that? Look like the way for some xtra compression, no dished faces which I disliked. Mike

 

[GS1150Pilot]

If you're going budget, madmike, titanium isn't a good option.

 

[madmikeracing]

Budget is doing all my own machining and other engine work! Amazes me what people charge for doing cranks...

 

[trippivot]

you are talking my language...

you are talking my language...

now you have my interest

A titanium valve is only 80 bucks a piece average price. a barillium seat is nearly the same. These exotic parts alone are just under 2 grand for intake side of your head alone. that is my kind of budget - unlimited.

and a bonus remark about price of crank work? I agree with you about the entertainment factor the internet provides!

I'd spend 2K on a crank/clutch before titanium valves - OH WAIT!- I did both - and then some.. more than once - lol !

 

[Fjbj40]

So for 2K on a crank you end up disassemble, polish, new bearings(main and rods), rods checked over and balanced, rod small bush replaced, crank reassembled, indexed and welded. Beefed up clutch basket, backing plate and springs.

Is this what would happen? If so then 2K seems reasonable me thinks! Not in my budget but if your racing then that bottom end should prove to add good service life if all else is properly done and tuned. Of course knowing how to operate the engine also counts!

 

[Guest]

How to avoid Chinese valves; http://gszone.biz/valves.html

WE don't like to do titanium on steel seats.

 

[madmikeracing]

Jay thank you for chiming in, i prefer Moldstar 90 material. I used to use beryllium copper back in the eighties, (I'm not sure i think I was only guy to use it back then?? never heard anyone else using it back in the days) used it as rod small end bush material and seats, We had a lot of it at the aircraft machine shop. The old German Engineer used to come over and watch me screw around after work making crap, Then he took a slight interest, after that id ask him questions regarding gear materials heat treating carburizing and so on , he was a smart old fellow. Currently have two brand new big valve heads but am working on the new Huge valve Head, had to make all new fixtures for my Machines, Anyhow keeps me of the streets at night I guess!! Also Beryllium is a toxic material when ground as well as tool steels, Use a mask!!! The mold stars not toxic!! You guys rock!! Thanks Jay I want titanium valves and want blanks I can machine to what I want, I don't want the hollow valve face either, ! Who would you buy from? JAY can DLC be applied onto titanium valve stems?? Ever put it on rocker pads and cam lobes? Thanks Mike

 

[madmikeracing]

Trip $2000. is a spit in the bucket that's for sure. !! Buying stuff from people also you don't know is always Highly Questionable.!! Seems so many charlatans out there trying to screw people, Good thing is with the Internet its amazing the emails you get from Other People telling stories!! Thanx for comments Mike