1.95 Hi ratio rockers part#

dagsy · #1 26-02-2007, 09:58 AM

Have seen your 1.9(YT6651) rockers but can't find your 1.95's anywhere??
do you have a part number/price for them to suit 1998 vt v6
cheers

TappetHead · #2 26-02-2007, 08:35 PM

Hey Dagsy.
Part number is YT6662, price is the same as other ratios $697

dagsy · #3 27-02-2007, 10:33 AM

is there much difference between 1.9 to 1.95 as far as better performance?

HoldenManDan · #4 01-03-2007, 09:40 PM

*BUMP*

I'm also wanting to know, even improvements over stock would be good. Do you have any dyno sheets from a VS before and after?

Thanks

TappetHead · #5 01-03-2007, 10:50 PM

Power gains from increasing the rocker ratio varies a lot, usually between 10 and 25kw. NA engines tend to see less gains than SC and modified engines, particularly with exhaust, t/body CAI mods. The latest test was done at Chipcontrol the other day so I will post up figures when they come through.
Cheers.
Mark.

TappetHead · #6 01-03-2007, 10:53 PM

Quote:

Originally Posted by dagsy

is there much difference between 1.9 to 1.95 as far as better performance?

Very little, usually 2 or 3 kw. but we have seen good gains by using mixed ratios particularly on high boost supercharged engines.

VS CALAIS · #7 04-03-2007, 07:16 PM

what "Mixed ratio" would you recommend for a L67 running 10psi ?? just thought i asked before ordering

swn081 · #8 05-03-2007, 08:58 PM

Will i have any problems fitting these to my VXII V6?

MICKY.D · #9 06-03-2007, 12:58 PM

Quote:

Originally Posted by VS CALAIS

what "Mixed ratio" would you recommend for a L67 running 10psi ?? just thought i asked before ordering

We normally recommend 1.9 inlet,1.95 exhaust.

Cheer's Micky.D

MICKY.D · #10 06-03-2007, 01:04 PM

Quote:

Originally Posted by swn081

Will i have any problems fitting these to my VXII V6?

They will bolt on quite nicely with a standard camshaft.

swn081 · #11 07-03-2007, 08:15 AM

Quote:

Originally Posted by MICKY.D

They will bolt on quite nicely with a standard camshaft.

excellent

CNULTR · #12 07-03-2007, 05:09 PM

I got a VY series II i was just wondering would it make ticking noise in the engine bay if i put the 1:95rockers and pushrods??

TappetHead · #13 08-03-2007, 10:19 AM

No.
That problem seems to be limited to modified factory arms.
We have plenty of VY II's running the full rollers with no noise.

CNULTR · #14 08-03-2007, 04:15 PM

Might sound stupid ,Factory arms as in ??