Putting in a Cam. Do you need to....
Discussion
Guessing you'll be looking at them and, if they're in good condition, feel quite sad that you've bought new ones?
I though the upgrades only added the ability to rev the motor a bit further? Can't see that your set-up really needs that, as they supercharger will only be in the way at higher revs. Maybe helpful on mile-runs, but not much else is my 2p.
I though the upgrades only added the ability to rev the motor a bit further? Can't see that your set-up really needs that, as they supercharger will only be in the way at higher revs. Maybe helpful on mile-runs, but not much else is my 2p.
Behold81 said:
Replace the lifters. While the engine is apart it seems sensible to swap the cam out. But do I need to do the lifters? It's quite an added cost if not a must right now.
The engine is getting a bottom end rebuild next year and was going to do that then is sensible.
Just check the rollers on the lifters. If they're all nice and smooth then no reason not to re-use them.The engine is getting a bottom end rebuild next year and was going to do that then is sensible.
Likes of LS7's etc arent a huge price though...and to change them later does require heads off. If rebuilding bottom end next year, then no reason you cant change them then. Dont forget...if something aint broke, dont fix them ! lol
Well that's the thing. I have ls6 heads to go on with new roller rockers and ls6 intake. I know a cam will help even more but coat keeps adding up. So while I don't want to cut corners if it's not needed to be replaced.
But maybe I pull a head and take a look. It's not like it's a big job to pull a head.
But maybe I pull a head and take a look. It's not like it's a big job to pull a head.
Behold81 said:
Well that's the thing. I have ls6 heads to go on with new roller rockers and ls6 intake. I know a cam will help even more but coat keeps adding up. So while I don't want to cut corners if it's not needed to be replaced.
But maybe I pull a head and take a look. It's not like it's a big job to pull a head.
I am still on original liftersBut maybe I pull a head and take a look. It's not like it's a big job to pull a head.
Behold81 said:
Well that's the thing. I have ls6 heads to go on with new roller rockers and ls6 intake. I know a cam will help even more but coat keeps adding up. So while I don't want to cut corners if it's not needed to be replaced.
But maybe I pull a head and take a look. It's not like it's a big job to pull a head.
If you've no other reason to pull a head, I wouldnt bother. Unless there has been some symptoms of a problem that might lead you to think the lifters need looking at.But maybe I pull a head and take a look. It's not like it's a big job to pull a head.
There is the £ 1000 question
Spec.
It's lookin like 115-116 seems best on a centri.
.6 lift on both seem common. But can I go more. Will it help?
What duration and lobe type?? This is a black art.
I'm happy to be a bit lairy. It's not a daily and it is my toy. Also emissions are easier as I'm on a no. Cat test mot.
Thoughts?
Spec.
It's lookin like 115-116 seems best on a centri.
.6 lift on both seem common. But can I go more. Will it help?
What duration and lobe type?? This is a black art.
I'm happy to be a bit lairy. It's not a daily and it is my toy. Also emissions are easier as I'm on a no. Cat test mot.
Thoughts?
Behold81 said:
There is the £ 1000 question
Spec.
It's lookin like 115-116 seems best on a centri.
.6 lift on both seem common. But can I go more. Will it help?
What duration and lobe type?? This is a black art.
I'm happy to be a bit lairy. It's not a daily and it is my toy. Also emissions are easier as I'm on a no. Cat test mot.
Thoughts?
So you dont actually have a cam yet ?Spec.
It's lookin like 115-116 seems best on a centri.
.6 lift on both seem common. But can I go more. Will it help?
What duration and lobe type?? This is a black art.
I'm happy to be a bit lairy. It's not a daily and it is my toy. Also emissions are easier as I'm on a no. Cat test mot.
Thoughts?
115-116 on its own means very little.
No need to go crazy with cams and I do prefer mild and very smooth idle etc myself, but maybe try Tick's ? They seem to say it will work with standard heads and engines with regards clearances etc....again obviously you'll need springs and pushrods. I'd guess they would sell kits too.
http://www.tickperformance.com/tick-performance-bl...
No I don't have a cam yet. Want to buy one soon to fit with my heads and intake.
Appreciate. 115-116 means little without lobe size. I guess most seem to be around that angle to remove overlap.
I'm happy to be a little rough on idle as I say it's not a daily. But no need to go full lairy if it does not gain anything.
Once I have a cam size I'll get matching springs, new rods and buy my gaskets ETC.
Appreciate. 115-116 means little without lobe size. I guess most seem to be around that angle to remove overlap.
I'm happy to be a little rough on idle as I say it's not a daily. But no need to go full lairy if it does not gain anything.
Once I have a cam size I'll get matching springs, new rods and buy my gaskets ETC.
Behold81 said:
No I don't have a cam yet. Want to buy one soon to fit with my heads and intake.
Appreciate. 115-116 means little without lobe size. I guess most seem to be around that angle to remove overlap.
I'm happy to be a little rough on idle as I say it's not a daily. But no need to go full lairy if it does not gain anything.
Once I have a cam size I'll get matching springs, new rods and buy my gaskets ETC.
I have the MF1 cam fitted to mine with 1.8 ratio roller rockers plus the d1sc prochargerAppreciate. 115-116 means little without lobe size. I guess most seem to be around that angle to remove overlap.
I'm happy to be a little rough on idle as I say it's not a daily. But no need to go full lairy if it does not gain anything.
Once I have a cam size I'll get matching springs, new rods and buy my gaskets ETC.
To be fair I'm running them as I have them. They should be stronger than the stock as is.
It is what it is and can always be changed later on.
But for now getting the right cam is the key to it all. I get what a cam does and how. But understanding what is best for the application is where I fall flat. Understanding what lift and duration suits best followed by what overlap or non overlap is going to net the best power and what advance is best suited is a mystery.
It is what it is and can always be changed later on.
But for now getting the right cam is the key to it all. I get what a cam does and how. But understanding what is best for the application is where I fall flat. Understanding what lift and duration suits best followed by what overlap or non overlap is going to net the best power and what advance is best suited is a mystery.
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