Anyone running a LLSR/Turbo combo?
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Anyone running a LLSR/Turbo combo? Starting on my 5.3l build & seriously considering going with a LLSR with the turbo. I have seen a few guys run NA on these but haven't noticed anyone post about using one in a turbo car so if you have or know anyone that has gone that route I'd love to here all about it.
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From: Norn Iron
Whether the engine is turbocharged or not makes little difference.
I've had one in mine for almost 2 years now albeit with a mild profile. Although I did just order a slightly bigger cam just a few days ago although wont be changing it until over the winter.
I've had one in mine for almost 2 years now albeit with a mild profile. Although I did just order a slightly bigger cam just a few days ago although wont be changing it until over the winter.
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Stevie: what's your profile now & what are you moving to? Are you using stock rockers or adj. rollers? Who did you go through for yours?
Do you feel the performance & durability difference is worth the cost offset in most circumstances?
Do you feel the performance & durability difference is worth the cost offset in most circumstances?
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Joined: Nov 2003
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From: Norn Iron
What's the point ? it's a good question and probably no solid answer. I just wanted to remove the small variable that hydraulic lifters offer.
Current profile is around 228/230 on 116 with a tad under 600thou lift, bumping that up by around 10deg or so and a little more lift.
Profile was kept mild initially because I want a super smooth idle and have yearly emissions tests to pass, so wasnt taking any risks as far as overlap etc go, although it passes these with ease hence pushing it up a bit further soon.
I originally wanted a cam that would be happy at 7-7500rpm for standing mile stuff etc, although I think forcing that milder profile didnt help me with that goal. The new profile should resolve that.
No doubt there are hydraulic cams that will do that too....I just wanted a solid roller, it seems like the more sensible option to me from a mechanical point of view.
I had no performance or durability issues with hydraulic...and nor have I had with the LLSR. I didnt change for those reasons*....I changed largely because I wanted to. Cost wasnt a big deal for me either, as I wanted to change the YT rockers I'd been using for several years anyway. I ended up with the 1.7 Jesels
*other than once a few years ago when I had some oil pressure problems...this very clearly was affecting the hydraulic setup and valve timing was affected. Obviously the oil pressure problem was the core problem there....either way, with a solid roller oil pressure will never effect the valve operation/timing etc.
Current profile is around 228/230 on 116 with a tad under 600thou lift, bumping that up by around 10deg or so and a little more lift.
Profile was kept mild initially because I want a super smooth idle and have yearly emissions tests to pass, so wasnt taking any risks as far as overlap etc go, although it passes these with ease hence pushing it up a bit further soon.
I originally wanted a cam that would be happy at 7-7500rpm for standing mile stuff etc, although I think forcing that milder profile didnt help me with that goal. The new profile should resolve that.
No doubt there are hydraulic cams that will do that too....I just wanted a solid roller, it seems like the more sensible option to me from a mechanical point of view.
I had no performance or durability issues with hydraulic...and nor have I had with the LLSR. I didnt change for those reasons*....I changed largely because I wanted to. Cost wasnt a big deal for me either, as I wanted to change the YT rockers I'd been using for several years anyway. I ended up with the 1.7 Jesels
*other than once a few years ago when I had some oil pressure problems...this very clearly was affecting the hydraulic setup and valve timing was affected. Obviously the oil pressure problem was the core problem there....either way, with a solid roller oil pressure will never effect the valve operation/timing etc.
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Joined: Nov 2003
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From: Norn Iron
So playing safe was the best option.
It just ended up far safer than expected lol.
And I'm sure we all throw more money at our cars than is necessary !
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Thanks again Stevie. It gives me a reference point.
I've never dealt with these new low lash cams. I've ran solid flats & rollers before but it was before the time of the lower lash stuff.
I appreciate the input.
Mind me asking the valve curtain timing?
I've never dealt with these new low lash cams. I've ran solid flats & rollers before but it was before the time of the lower lash stuff.
I appreciate the input.
Mind me asking the valve curtain timing?
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