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Tb 411

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#3 ·
The TB cam has the same exact specs as the G2 with just slightly more exhaust duration(within a couple of degrees). Same good quality bearings. Compared to the Crower cam it's a much better value for the money.

And yes I am running it in a GPX stock head with a 140 kit. It's good bang for the buck.
 
Discussion starter · #9 ·
I kinda figured the tb was gonna be same as the G2 looks like ill be ordering up one in a couple days. Definately would be interested in some dyno comparisons tho. Since were on the topic does anyone know anything about the CHP 52.4mm piston, It looks alot nicer than the ahp.

Anyone running one? http://tboltusa.com/store/product_info.php?cPath=51_37&products_id=248
 
#11 ·
I measured 2 brand new TB cams and 1 brand new G2 and a used G2. All lift specs are with a couple thou. Intake from .254 to .256" and exhaust from .233 to .236" Duration is only 215 degrees and 211 degrees respectively measured @ .050". Not even close to the advertised 236 degrees. That's all I have on this subject. I look forward to your dyno findings.
 
#13 ·
orraclekid15 said:
I kinda figured the tb was gonna be same as the G2 looks like ill be ordering up one in a couple days. Definately would be interested in some dyno comparisons tho. Since were on the topic does anyone know anything about the CHP 52.4mm piston, It looks alot nicer than the ahp.

Anyone running one? http://tboltusa.com/store/product_info.php?cPath=51_37&products_id=248
Click to expand...


both the ahp and chp hc pistons are nice

but they are designed to fit 86-107cc chinese motors

not gpx



the best /cheap set up is the tb 54mm piston kit w/ stock gpx gasket set and just bore the stock cyl to 54mm
 
#14 ·
FastMC said:
I measured 2 brand new TB cams and 1 brand new G2 and a used G2. All lift specs are with a couple thou. Intake from .254 to .256" and exhaust from .233 to .236" Duration is only 215 degrees and 211 degrees respectively measured @ .050". Not even close to the advertised 236 degrees. That's all I have on this subject. I look forward to your dyno findings.
Click to expand...


i heard of this too

but we have found both cams to be very strong runners



fast mc

if u have time measure the tb xr100 cam

theres no spec online for that cam
 
#15 ·
dragndave said:
no dyno testing today. an accident took out a power line that feeds the building im in.will try to dyno during the week if i get some free time.if not ,next sunday.
Click to expand...


You going to get chance to dyno that cam I sent you too? Or check the specs on it?
 
Discussion starter · #18 ·
TheCRKid said:
both the ahp and chp hc pistons are nice

but they are designed to fit 86-107cc chinese motors

not gpx



the best /cheap set up is the tb 54mm piston kit w/ stock gpx gasket set and just bore the stock cyl to 54mm
Click to expand...


Will this piston not work for a gpx or is it just not optimal? It says on your site that it works in a gpx. If I were to go with a 54mm what would that bump me up to?
 
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