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Roller lifter for type 4
Posted: Mon Aug 29, 2005 5:30 am
by Passatman
Hi all,
Haven't posted here in year's, but i'm back. Quick question doe's anyone know if jake sell's roller lifter's and camshaft for t4 engine.
Posted: Mon Aug 29, 2005 5:57 am
by MASSIVE TYPE IV
Development of them is being finished as we speak...
Posted: Mon Aug 29, 2005 6:00 am
by Passatman
That's great if i have the money i think i will get them.
Posted: Mon Aug 29, 2005 6:05 am
by Passatman
Jake do you have any of the upright conversion manual for t4 around at the store.
Posted: Wed Aug 31, 2005 12:27 am
by Wally
MASSIVE TYPE IV wrote:Development of them is being finished as we speak...
Cool!
What would be the main benefit from them over ceramics? Friction wise it would hardly be possible to beat the ceramics one would think..or does it?
Weight of a ceramic is also hard to beat...
Steeper lifting angles perhaps for short-life (valve guides) racing engines?
Tnx,
Walter
Posted: Wed Aug 31, 2005 7:54 am
by MASSIVE TYPE IV
What would be the main benefit from them over ceramics?
Well.... For one these would be easy to get... for another the roller design allows the valve to be ultimately controlled and a cam grind no longer has to worry about ramp speeds, since the roller lifter doesn't rotate in the bore.. This means we can slightly open the valve right off the seat till the point of max piston interferance and then 2 degrees after that we can slam it home as fast as we can- this super increses chamber filling. The ceramic lifters are still a flat tappet and this can't be safely done with them.
Friction wise it would hardly be possible to beat the ceramics one would think..or does it?
Thats why these roller lifters have a ceramic rotating foot- zero friction from the ceramic coupled with the benefits of the roller profile.
The right combo of rollers will create a 2056 thats just as strong as a 2270 with flat tappets.... The roller set up will only be 650.00 or so!!!!!
Posted: Wed Aug 31, 2005 8:35 am
by Rescue912
The right combo of rollers will create a 2056 thats just as strong as a 2270 with flat tappets
sign me up ...
Posted: Wed Aug 31, 2005 11:08 pm
by Wally
Thanks for the informative reply Jake!
Then you must also design a whole new array of cams for it I guess
Would they also need more spring?
Walter
Posted: Thu Sep 01, 2005 12:20 am
by Pat.B
Any cam should work with these lifters provided that they are
ground for use with roller lifters then? or can they be used with conventional lobe desighns?...
Wow Roller lifters, cool
Pat.B
Posted: Thu Sep 01, 2005 5:54 am
by MASSIVE TYPE IV
Running a conventional cam lobe with these lifters would not take advantage of their capabilities.. All the cams that will be used for these arrangements will be billet steel blanks- not cast iron.
Yes, this has been a huge undertaking so far in the cam profile department- starting from ground zero is what it has taken.
More when I get to the next stage and can share it.
Posted: Thu Sep 01, 2005 7:02 am
by Bleyseng
Whats the time table for these? I am thinking maybe of installing my set of ceramics in the 2056 914 motor and going to the roller lifters for the 2.4l if they are coming out in the next six months.
Geoff
Posted: Thu Sep 01, 2005 9:05 am
by MASSIVE TYPE IV
It'll take way more than six months to even get a couple of cam grinds made and perfected. The company doing the cam work with me is NASCAR based so not much will get done until the end of their season.
Posted: Thu Sep 01, 2005 4:41 pm
by Bleyseng
ok, I'll forget that idea.
Posted: Fri Sep 02, 2005 9:29 pm
by RG64
Jake, will any machining need to be done to the case or lifter bores to accept the roller lifters?
Rick
Posted: Sun Sep 04, 2005 12:18 pm
by MASSIVE TYPE IV
Nope...
Drive in the bushings with the supplied tool and you are done. The bushings reduce bore diameter a tad and also align the lifters in their axis so they cannot rotate.