Roller Rockers Pros's and Con's
Discussion
Well having watched Clive F set the tappets on my motor, three spanners and a feeler gauge all at once cheers buddy 
it occurred to me that the simplicity of doing that job with roller rockers is a far better proposal 
So i have brought these baby's
I also realise that they may give an HP improvement at top end so what is the theory behind this and what should i expect to gain ?
My car is running a solid cam an after market ecu big injectors lots of induction mods and Dino's 350 hp
Thanks in advance
Pasco
it occurred to me that the simplicity of doing that job with roller rockers is a far better proposal So i have brought these baby's
I also realise that they may give an HP improvement at top end so what is the theory behind this and what should i expect to gain ?
My car is running a solid cam an after market ecu big injectors lots of induction mods and Dino's 350 hp
Thanks in advance
Pasco
Del 203 said:
Pasco said:
Blimey i come on here to have a serious conversation and this happens 
I suppose i have made a rod for my own back Del
Vengeance is I suppose i have made a rod for my own back Del
I actually hope you get some answers mate, i'm thinking about some Yella Terra's
Cons: They cost a lot more, they take up more space under the rocker covers (may need bigger covers), they may be heavier which is generally bad in a valve train.
Pros: they are probably adjustable (no real benefit for a hydraulic cam but handy if you have solid lifters, although you can get non-roller adjustable rockers too).
The main benefit is that it avoids putting side load on the valve stem which means you can run a higher lift cam.
Pros: they are probably adjustable (no real benefit for a hydraulic cam but handy if you have solid lifters, although you can get non-roller adjustable rockers too).
The main benefit is that it avoids putting side load on the valve stem which means you can run a higher lift cam.
GreenV8S said:
Cons: They cost a lot more, they take up more space under the rocker covers (may need bigger covers), they may be heavier which is generally bad in a valve train.
Pros: they are probably adjustable (no real benefit for a hydraulic cam but handy if you have solid lifters, although you can get non-roller adjustable rockers too).
The main benefit is that it avoids putting side load on the valve stem which means you can run a higher lift cam.
Cheers Pete Pros: they are probably adjustable (no real benefit for a hydraulic cam but handy if you have solid lifters, although you can get non-roller adjustable rockers too).
The main benefit is that it avoids putting side load on the valve stem which means you can run a higher lift cam.
The set i brought have little if no work and cost me £400 and came with a custom made set of spacers which i may or may not need in the purple rocker covers
I have solid lifters and cam
My cam is very wild so what improvements can i expect ? will it let me rev the engine higher than the 6200 rpm where i see my current max hp Pete ?
Boosted LS1 said:
They also need less oil to lube them so you can restrict the head supply. They may not have good geometry and sweep across the valve tip properly so can you move them away/towards the valve? They'll take ages to set up but if you like that sort of thing
Hello Mike nice to meet you at Joo's the other week Sorry mate but i thought they took no setting up
and were a sensible move forwardsI'm now
Nice to meet you to
Obviously you have to set up rocker arm/valve clearances but depending on the rocker arm ratio and geometry you need to ensure a nice 'sweep' across the valve stem. This will encourage the valves to rotate properly. I once saw a set of KB's on an engine and they were all wrong so they were removed and years later are probably still gathering dust somewhere. Adjustable rockers aren't my strong point but you do need to consider these issues when installing them. You'll have to check each one to if you want the best from them.
Obviously you have to set up rocker arm/valve clearances but depending on the rocker arm ratio and geometry you need to ensure a nice 'sweep' across the valve stem. This will encourage the valves to rotate properly. I once saw a set of KB's on an engine and they were all wrong so they were removed and years later are probably still gathering dust somewhere. Adjustable rockers aren't my strong point but you do need to consider these issues when installing them. You'll have to check each one to if you want the best from them.
Boosted LS1 said:
Nice to meet you to
Obviously you have to set up rocker arm/valve clearances but depending on the rocker arm ratio and geometry you need to ensure a nice 'sweep' across the valve stem. This will encourage the valves to rotate properly. I once saw a set of KB's on an engine and they were all wrong so they were removed and years later are probably still gathering dust somewhere. Adjustable rockers aren't my strong point but you do need to consider these issues when installing them. You'll have to check each one to if you want the best from them.
Ok mate so set up is very important but what about the positives i hope there are some Obviously you have to set up rocker arm/valve clearances but depending on the rocker arm ratio and geometry you need to ensure a nice 'sweep' across the valve stem. This will encourage the valves to rotate properly. I once saw a set of KB's on an engine and they were all wrong so they were removed and years later are probably still gathering dust somewhere. Adjustable rockers aren't my strong point but you do need to consider these issues when installing them. You'll have to check each one to if you want the best from them.
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