So pedestal mount rockers are effin expensive. I need some input on what I should do. Looks like conerting my p heads to stud is the way to go. What brand of rockers do you guys suggest. I'd like to keep the rockers at about 250$ as I will have to get studs and guide plates.
Roller rockers
- Thread starter Insayne
- Start date
rz5.0
Legend
Same price. Were you looking?
I was looking at the manufacturers websites. Harland sharps were like 260 for stud mount and 450-660 for pedastal mount. I went to summit and found some crane 1.7's and scorpions 1.7's for under 250. So I stand corrected.
rz5.0
Legend
Alot of conpany's offer 1.7 samething cobras came with
OnyxCobra
Post Whore
the TFS1 uses whatever you put it with, but the lift spec is for 1.6, would be more with 1.7. If you want an inexpensive pedestal mount look for some used Crane Cobra rockers.
rz5.0
Legend
I would just stick with 1.6. Might loose a lil power down low with 1.7 you could do 1.6 on intake 1.7 on exhaust side. Doubt you wanna spend that tho.
OnyxCobra
Post Whore
If you have the piston to valve clearance and can get 1.7s for cheap I'd go for it.
Well I won't know ptv until I'm dropping the head on unfortunately. I'm taking the p heads to 1.9 and 1.6 valve size and I'm curious how close ptv is going to be with 1.6's. How much further in is the 1.7 going to plunge the valve?
rz5.0
Legend
Ther is a formula for that and I been told a lot of times even on this forum but it just wount stick. Not much tho are you scared to cut your pistons? Its ez hardest thing is getting the tool and time it takes.
Edit: so found the formula( lift/1.6x1.7} so take the lift devide by 1.6 if its what the cam spec use then times new ratio 1.7.
Not sure that they under rate them but ive allway thought most 1.7 are 1.72 not all of them tho.
Edit: so found the formula( lift/1.6x1.7} so take the lift devide by 1.6 if its what the cam spec use then times new ratio 1.7.
Not sure that they under rate them but ive allway thought most 1.7 are 1.72 not all of them tho.
I've seen the isky relief tool and it shouldnt be hard. My concerns are the unknown. Piston thickness how much balance change may occur. That sort of stuff. I'm trying to amass all the parts build the heads and be ready to put it together. Then take a few days off and put it all together so the more I know now and hammer out ahead of time the smoother things will roll. I don't want to get the heads on and go to measure ptv and find out I need to cut and be with out transportation waiting in my isky cutter.
rz5.0
Legend
I did it to mine no issues you dont cut deeper just wider.
OnyxCobra
Post Whore
correct, so say the TFS1 cam is .499 lift on the intake, since that's with 1.6 rockers you divide by 1.6 = .312 then multiply the new rocker size, in this case 1.7. so final lift would be .530
there are some cams like the Crane 2031 that list the specs with 1.7 rockers though, so just something to keep an eye out for.
So the isky tool is out of my price range ATM. Spending 100 per size is a bit steep when I have so much other stuff to get together. I have to shop around but I don't think I'll find them that much cheaper. I have to swing by my shop and see what my step dad has. He may have a way to do it already. Or I could always free hand it. Thanks for the calculations guys very handy I'm going to go crunch numbers now haha.
rz5.0
Legend
There was a guy on here said he would rent his out. Search. There is slso some people used real coarse sandpaper. Do a search on here.
