Jersey

Thanks madkaw. I've thought about making a set of those HM det cans, just haven't got around to it. No knock sensor installed unfortunately. Safe travels.

Thanks awd, madkaw. 1st start went great last week. She fired up instantly and ran it @ 1500-2000prm for about 20 minutes to break in the cam. Since then, made a few changes to the VE, AE, WUE settings and also ditched the unstable manual BC & enabled the EBC. Ran some data logs and it stays close to the AFR table I've set up, boosting to 15psi. Still a bunch of tuning to do but so far, it seems ok and pulls pretty dang hard without any detonation that I can hear. True madkaw, it was nerve racking. I did need to make a bunch of changes to the GR tune before 1st start or, it really had no chance at starting. GR had all my motor specs and purchased all the MS components through them, but it almost seems like they left most, if not all of the settings they had for their test motor as the current tune. No big deal since I figured it all out before I turned the key but, worth mentioning if someone else goes down this road. Their assembled unit and wiring harness are very nice which made the install pretty painless. I also converted from hydro lifters to solid during the MS install and need to do a quick write-up on that at some point. After installing the time-serts and solids, cranked it a bunch without the rockers and the lifter oil ports on the P90A head were moving a lot of oil past the smaller headed solid lifters. Found some copper metric washers to use which sealed the small oil ports almost completely. With the amount of oil getting past the lifters at cranking speed, I wasn't comfortable leaving it like that since I'm sure there would be a lot more blowby at higher RPM's, possibly starving the crank bearings, cam & bearings, etc. Also picked up some .160 lash pads which put the wipe pattern perfect with the Delta regrind. A little to the lifter side which creates a little more lift, which is good. North-eastern NJ, Morris county madkaw. Thanks for the replies guys. Now I need to find a Dyno and a tuner in NJ that knows MS because I'm sure I'm leaving a lot on the table since this is the 1st time I'm ever tuning, especially in the ignition table dept. If anyone knows of someone they trust in my area, please let me know.

Thanks Jon. Nice to hear from a familiar member. Guess we'll see how this .443, 212° @ .050 w/260° of duration works out for now. This whole cam dilemma just became a bump in the road when I started the Megasquirt install. Received the solid lifters and time-serts today, hope to do the wipe patterns tonight to see which lash pads will be needed. Once I get this all sorted, back to figuring out how to tune this MS! Wish there wasn't so many variables but, is what it is. I do like your way of thinking though... Go big or go home!

We shall see. Thanks Brad.

Thanks Brad. Solid lifters, mousetraps and time-serts on their way. Figured the hydros were going to bite me sooner or later, might as well make the switch now. From my measurements, looks like he took just about .060 off the base. Hoping I wont need to go larger than .160 pads so I’m able to keep the stock retainers. He did say this grind would work with either the solids or hydros, but didn’t have the ramp angle spec. Might be time to get a dial indicator because now I’m curious and could pass this info along to others.

Ok, thanks. Whew, thought I wrote something that offended or against new rules or something. Yes, Moby's posts were some of the first few thousand on MS setup I read before talking my cousin into MS'ing his 77. And I've also read a bunch of your posts, the most recent in helping Flak280z back in April with his setup. Your help and replies are much appreciated. It's just that a lot of the posts and stickies are from 10-15-20 years ago and there's a whole bunch of different setups so, I just wanted to see if someone could comment on the tables I've set up for this build before the 1st start to make sure I'm not way out of line. Granted, every motor is different, and tunes will need to be tweaked even if builds are exactly the same, which I understand. Anyway, thanks for the reply and enjoy the long weekend.

Morning all, Please don't take this as I'm complaining, I'm just curious if I posted something out of line? Maybe my setup or settings are so far out of whack that nobody wants to comment on or possibly this subject has just beat to death? Granted, I haven't visited this site much in several years since my Z's been laid up so maybe members aren't as active as they used to be when I joined over 20 years ago? If you'd rather not comment publicly, please feel free to PM me. Thx - Jersey

Ken couldn't really suggest which pads would be right since the base circle was cut and I also had him resurface the rockers so, understandable. From the measurements I took if I were going to use the hydro lifters, it looks like I'd need something in the .190 range, and that's with guessing @ .020 preload on the lifters. Couldn't find the exact amount of preload that they should have but @ .170, the rockers were tight up against the cam. Time-serts, mechanical lifters and with springs are on their way. Ken said the grind was a "260" Stage 1, 212 @ .050 w/443 duration.

For some unforeseen issues, I may be switching gears on this once again and swapping over to mechanical lifters & time-serts in the P90A head. Question is, can I use the original Hydro cam that Delta just shaved down for me if i go this route or would i need to go with a solid cam/spray bar setup? I've read a few times now about the "clearance" or "opening" ramp being too aggressive on the hydro cams and will cause a noisy valvetrain and probable rocker/cam lobe damage if used with mechanical lifters. True? Untrue? Over thinking? Thanks.

Sorry, those table images came out real small. Hopefully these are better...

Hi all. I just finished installing an MS2 v3.57 from Godzilla Raceworks and will be installing the Delta reground cam tonight. I'm hoping once I get the wipe patterns correct and get it all back together, I can get it up and running to about 2k rpm as quickly as possible to properly break in the cam/mate the rockers. The motor is in solid condition and ran well before I started the MS install, other than being pig rich and dangerously lean with the stock ECU. I'm hoping someone could take a look at my config and the AFR, VE and Ignition tables I've added to the base tune GR sent to make sure I'm in the ballpark. I left all of the other GR base settings alone, just these 3 tables seemed to be set way rich and very conservative, which I'm sure is the safest option on their behalf. Any and all suggestions are more than welcome. MS is all new to me so please no flames! ha. Thanks in advance. ’83 L28ET Turbo motor MegaSquirt MS2 v3.57 F54 block P90A Head w/hydraulic lifters Ported N42 Intake 2mm Metal head gasket JE Forged Pistons T3/T4, 50trim E wheel, .63 Stage III clipped Bosch EV6 440cc Injectors - NEW 60mm 240sx Throttle Body Walbro 255LPH Fuel Pump SS 3/8” Fuel Supply Line Pallnet Fuel Rail - NEW Aeromotive FPR - NEW AEM Wideband O2 - NEW NPR Intercooler Allstar 40,000v High Performance Ignition Coil - NEW Electronic Boost Control - NEW, but not enabling yet Greddy BOV Custom DP w/3” Exhaust Dual Perma-Cool Electric Fans

Yes, think he said something in the 260 range. I will definitely ask which pads he recommends once he's done with the grind, thanks Brad. I'm assuming something close would be the stock .160 pads, plus the amount of material removed from the base circle should put me in the ballpark? And then I'll need to check wipe patterns when installing to be sure. Great, now I need to learn how to check wipe patterns! LOL. See, told you I was green when it comes to cam selection and all that's involved. It's like a black art to get it all right! Appreciate the time and info.

Thanks. I spoke with Ken @ Delta earlier and I'll be sending him the P90A cam for a regrind and a slight mod (stage 1?).

Thanks AZ. I think I'm leaning toward sending this P90A cam to Delta for a regrind for now. Don't really want to do any head work at this time, that might be the winter project once we pull the motor to get body work done. Anyone have a suggestion on what specs I should give for the regrind considering the mods I've posted above? Sorry, I'm real green when it comes to this as I've never done it before and I know a bunch on here have. Again, not looking to go crazy, mainly streetable with occasional blasts when needed Jersey