Looking for dyno info regarding Yella Terra rockers
#1
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Looking for dyno info regarding Yella Terra rockers
Some folks have asked me recently for info regarding 1.7 Y/T rockers.
What I'd like to hear about, is has anyone picked up at least 5rwhp from swapping them on? Stock or modified cars.
Please post your experiences.
What I'd like to hear about, is has anyone picked up at least 5rwhp from swapping them on? Stock or modified cars.
Please post your experiences.
#2
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Re: Looking for dyno info regarding Yella Terra rockers
yep you can find some post about my gains here somewhere.
But I went to Raging Motor Sports and Mark stapped my T/A on the dyno and we did 3 runs. Then we swapped to YT 1.7 from stock rockers without unhooking from the dyno. we pulled 3 runs afterwards and had a solid 7hp on each run... no change in weather. I have S3 heads with Manley double springs and a TR224/224 and I was shelling the stock rockers. I have had no problems since and while not perfectly quite it is much better than stock. Mark saw gains along the same lines on other cars he tested.
Ozz
But I went to Raging Motor Sports and Mark stapped my T/A on the dyno and we did 3 runs. Then we swapped to YT 1.7 from stock rockers without unhooking from the dyno. we pulled 3 runs afterwards and had a solid 7hp on each run... no change in weather. I have S3 heads with Manley double springs and a TR224/224 and I was shelling the stock rockers. I have had no problems since and while not perfectly quite it is much better than stock. Mark saw gains along the same lines on other cars he tested.
Ozz
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Re: Looking for dyno info regarding Yella Terra rockers
Matt is correct on his dyno and we did two other swaps ON the dyno. One being a customers H/C car that made 422rwhp before the rockers and a steady 430rwhp after. The shop formula was a test mule too. It only picked up about 5rwhp and 5rwtq.
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Re: Looking for dyno info regarding Yella Terra rockers
Were the gains across the whole rpm range or limited to top-end only, or somewhere else?
Can you post a dynograph, please?
Thanks,
Randy
Can you post a dynograph, please?
Thanks,
Randy
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Re: Looking for dyno info regarding Yella Terra rockers
John,
Are you using a good set of rockers on your new combo? Probably not such a bad idea if you are going to be spinning the car that high!
Scott
Are you using a good set of rockers on your new combo? Probably not such a bad idea if you are going to be spinning the car that high!
Scott