Jump to content
SAU Community

Hydraulic cam with solid lifter conversion?

lsmith

By lsmith,
in Engines & Forced Induction

 Share

Recommended Posts

lsmith Newbie

lsmith

Posted
Posted (edited)

Hello, 

I recently purchased an s15 (sr20det) that sounds like a tractor, the owner assured me that it was due to solid lifters he installed with the last rebuild. However after a wee cam inspection I suspect that his engine builder installed camtech hydraulic cams (the lobes are very broad). Has anyone got any experience with this situation? Any idea what effect it will have on the power curve or if I'm likely to break anything?

Cheers

Edited by lsmith
MJTru Mentor

MJTru

Posted
Posted

Believe it or not it's the camshaft sprocket. Vvti. Vtech. From what I know SR20 has no solid lifter. The have a lifter retainer that keeps them from jumping out. I have no idea how you would run a solid lifter on a SR20 as the lifter isn't under the cam. It's offset and uses a rocker arm to press the valves open. Lifter retainer are made out of stainless steel iirc. And keeps them in place at high rpms. I would replace both vtech cam sprockets as there notorious for valve train noise. Sound like tractor. Providing oil pressure is good and solenoid are good and all electrics to solenoid is ok.

lsmith Newbie

lsmith

Posted
  • Author
Posted (edited)

Hmmm probably should been more clear, this isn't a stock sr20det. The engine has been built (forged pistons, manley rods, rockers stoppers, head studs, etc) and has a solid lifter conversion.... which in this case just means solid pivots, guides and shims. e.g. http://www.tomeiusa.com/_2003web-catalogue/e098_pivot2.html

The VVT has been removed and adjustable cam sprockets added. 

EDIT: From what I've read there are different cams profiles for solid (mine) vs hydraulic pivots (standard), so I'm wondering what effect mismatched cams would have...

Edited by lsmith
MJTru Mentor

MJTru

Posted
Posted

Ok that's better. If it has solid lifters then. The clear is critical. Sounds to be like it's all mest up clearance wise. I can remember a mate of mine doing a video of how he does the clearance. I'll see if I can add a link in here

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Duncan's V37.......race car?

      By MBS206 · Posted

      Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • RP1421
      S15 Spec R

      By RP1421 · Posted

      As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • joshuaho96
      R32 GTS (RB20DE) Injectors Replacement

      By joshuaho96 · Posted

      I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...