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| Home > Help Needed / General Tech Chat > 1.5 roller tip rockers on supercharged engine | |||||||
 78 Posts Member #: 8913 Advanced Member seaford, east sussex |
26th Sep, 2011 at 09:01:47pm
hi all, do any of you guys run 1.5 rockers on your turbo or supercharged engines. i heard there not to good for force induction engines, ill be running a turbo/supercharged cam in my engine i only ask as i already have a brand new set in garage and was wondering if they would be beneficial?
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 4890 Posts Member #: 1775 Post Whore Chester |
26th Sep, 2011 at 10:24:22pm
I ran 1.5 on my standard cam supercharged engine they wore out the guides and I didn't see much inprovement at the rollers. I'm making more power now on standard rollers I run a supercharger and I don't care the TB is on the wrong side.
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78 Posts Member #: 8913 Advanced Member seaford, east sussex |
26th Sep, 2011 at 11:10:04pm
iv heard standard rockers are better on supercharged engines. maybe i'll get some 1.3 roller rockers.
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 665 Posts Member #: 9345 Post Whore Sheffield |
26th Sep, 2011 at 11:11:06pm
A 1.5 rocker is opening the valve more and earlier than lower ratio ones. There is no reason a forced induction engine would not benefit. I don't think the gains are ever huge, but it all adds up I suppose. I think roller tip ones are worth a go as they should reduce guide problems. |
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78 Posts Member #: 8913 Advanced Member seaford, east sussex |
26th Sep, 2011 at 11:21:11pm
hmm ok makes sense. what are people running with there turbo and supercharged engines and what cams?
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
27th Sep, 2011 at 08:28:09am
On 26th Sep, 2011 jamie@thefatgarage said:
A 1.5 rocker is opening the valve more and earlier than lower ratio ones. There is no reason a forced induction engine would not benefit. I don't think the gains are ever huge, but it all adds up I suppose. I think roller tip ones are worth a go as they should reduce guide problems. Earlier? Please elaborate. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
27th Sep, 2011 at 08:35:01am
What are you planing to run turbo charged or supercharged?
On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
27th Sep, 2011 at 09:43:27am
On 26th Sep, 2011 jamie@thefatgarage said:
A 1.5 rocker is opening the valve more and earlier than lower ratio ones. There is no reason a forced induction engine would not benefit. I don't think the gains are ever huge, but it all adds up I suppose. I think roller tip ones are worth a go as they should reduce guide problems. The valve still opens and closes at the same time, it just accelerates to full open faster since the valve has to travel further in the same time period, that time period being fixed by the cam. What you might be reffering to is that the valve lift throught its duration will always be more 'open' than it would with the standard rockers with relation to the same piston in bore height On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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665 Posts Member #: 9345 Post Whore Sheffield |
27th Sep, 2011 at 09:47:40am
I meant exactly that, by earlier I meant it reaches any given lift earlier in the cycle. |
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78 Posts Member #: 8913 Advanced Member seaford, east sussex |
27th Sep, 2011 at 06:16:42pm
im running eaton 45 supercharger. so im having a billet cam made by piper which is for a supercharged A series.
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
27th Sep, 2011 at 06:22:51pm
All the 1.5 rockers do is increase the lift for the cam that is in your engine. They are best suited as a bolt on mod to an engine that is in a Mini, and you don't want to pull it out to change the cam itself.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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2497 Posts Member #: 1954 Post Whore Luton Bedfordshire |
27th Sep, 2011 at 08:54:01pm
Please dont flame me for this but does anyone on here place shims under the their standard rocker towers? I read a thread on this somewhere and the results from doing this were quite surprising. Own the day
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4309 Posts Member #: 1321 Post Whore Wiltshire |
27th Sep, 2011 at 09:30:29pm
On 27th Sep, 2011 Mr Joshua said:
Please dont flame me for this but does anyone on here place shims under the their standard rocker towers? I read a thread on this somewhere and the results from doing this were quite surprising. Wouldn't this only be applicable for heavily skimmed heads where the valve train geomatry is affected? On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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38 Posts Member #: 4584 Member Perth, Australia |
4th Oct, 2011 at 06:03:00pm
matt-atude, has piper given you the detailed specs of the cam, such as LSA? I am trying to decide which cam to go into my SC engine.
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16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
4th Oct, 2011 at 06:10:01pm
One that VMAX Scart offered a while ago, not sure if he's still doing them. On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it
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78 Posts Member #: 8913 Advanced Member seaford, east sussex |
5th Oct, 2011 at 07:01:03pm
hi moke 123, stuart at vmax isn't doing them i dont think as he was the one who tipped me off about piper's supercharged cam. cam arrived today. it dont have a special name they grind it to order i asked for a supercharged A series cam, on istallation data form it say A series billet to BP285 inlet BP270 exhaust @107.5 spec
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