d.p Posted February 7, 2021 Report Share Posted February 7, 2021 Nah I don’t know shit about guns. They upgraded this place yesterday and seems to be ok for me. Quote Link to comment
datzenmike Posted February 7, 2021 Report Share Posted February 7, 2021 6 minutes ago, mainer311 said: You'll notice all the gun shit in the background. This is my reloading bench in the basement, so it stays clean. This is my workbench It's harder to post pictures. 1 2 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 Well, I hadn’t accounted for the difference in OAL of these SI valves. The intake valves are 0.04” shorter than the exhaust valves, and once I set the initial lash, the intake lobes come right to the edges of the rockers. I’m already running .150” lash pads. What’s the max thickness I can run in the stock spring retainers? Does anyone have any good leads on deeper retainers? A couple other threads on here say .180” is the thickest, but that’s only .03” more than what I have now and I’m not sure if that will work. 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 One more thing I thought of: could I buy thicker than necessary pads and then machine the pocket in the bottom of them that sits on the end of the valve? This would keep more of the pad within the retainer. 1 Quote Link to comment
datzenmike Posted February 9, 2021 Report Share Posted February 9, 2021 The replacement lash pads should have the pocket in the bottom already. All lash pads have the same amount within the retainer. The thicker ones just have more sticking out above them. Aren't the aluminum retainers deeper? 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 6 hours ago, datzenmike said: The replacement lash pads should have the pocket in the bottom already. All lash pads have the same amount within the retainer. The thicker ones just have more sticking out above them. Aren't the aluminum retainers deeper? The replacement lash pads don’t have the counterbore on the bottom. Only nonexistent NOS pads have that. Aftermarket is just flat across the bottom, so less sticks down into the retainer. Have a source for the aluminum retainers? I looked high and low last night and couldn’t find anything. 1 Quote Link to comment
Crashtd420 Posted February 9, 2021 Report Share Posted February 9, 2021 2 hours ago, mainer311 said: The replacement lash pads don’t have the counterbore on the bottom. Only nonexistent NOS pads have that. Aftermarket is just flat across the bottom, so less sticks down into the retainer. Have a source for the aluminum retainers? I looked high and low last night and couldn’t find anything. I got lash pads, springs and retainers from Schneider racing cams.... I'll try to see if I actually have a picture of the bottom of the lash pads.... I think they had the small pocket underneath but I'm not 100% sure.... 1 Quote Link to comment
Crashtd420 Posted February 9, 2021 Report Share Posted February 9, 2021 Well that might not help you.... Schneider lists the lash pads but no size or price..... Their website changed and it doesn't seem like they have anything more than the regrind available.... You could try calling... 1 Quote Link to comment
Crashtd420 Posted February 9, 2021 Report Share Posted February 9, 2021 7 minutes ago, Crashtd420 said: Well that might not help you.... Schneider lists the lash pads but no size or price..... Their website changed and it doesn't seem like they have anything more than the regrind available.... You could try calling... Edit: sorry no pics 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 Yeah, I'm kinda stuck right now. I put all new OEM retainers and springs in. I did clean one of the intake rockers last night and ran a wipe pattern with Dykem blue. It's not off the edge, but it's close. I've also read that getting it close to the pivot side is ideal because you get the most lift out of the cam. (Effective rocker ratio increases.) I may just get some .170 or .180 pads for just the intake valves and get them slightly more centered. 1 Quote Link to comment
banzai510(hainz) Posted February 9, 2021 Report Share Posted February 9, 2021 (edited) all the after market pads are flush on the bottom. I think I remember right it was 160 or so you can run without to much worry but I dont believe this If you rqace a motor. as it seem more of the pad is above the retainer than below holding it down and I would get the specs tighter to keep them in there 006/008 lash gap. There is a place in Austraila that has thicker and counter sunk pads which I dont know why they dont inport them here. then one can use the stock steel retainers and run the reground cams without getting to expensive Example: get a cam up to 470-475 and just get the lash pads to fit Done . done need to do anything. Im sure the stock springs would be fine if a Aysymetric cam grind, slower closing. would be or able to be done. As regrinds they all need thicker pads. a New cam might not need as thick pad. as I have a Scheider 460 and it barely needed a 150. As for the closer to the pivot end I heard this and read it but I dont know if that is true as the farther away from the center high point of the lobe I think youll start to get less lift Edited February 9, 2021 by banzai510(hainz) 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 (edited) @banzai510(hainz)I did the base circle math on this regrind (which does look asymmetric) and a .180” lash pad looks about perfect. (1.300-1.223)/2 x 1.48 + .120 stock thickness. This nets about .176”. Last night I measured the old valves for OAL and got the same numbers as the new valves, so not much changed there. I even cut the seats a little bit, which should improve things. I’m a little worried about the .180” pads in the stock retainers, but Sealik claims it can be done. This engine will putter around town. I highly doubt it will ever see 6krpm. Edited February 9, 2021 by mainer311 1 Quote Link to comment
Crashtd420 Posted February 9, 2021 Report Share Posted February 9, 2021 I have the old pads and retainers from my w58 head.... I'll see after work if any of those spare parts will help you.... 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 27 minutes ago, Crashtd420 said: I have the old pads and retainers from my w58 head.... I'll see after work if any of those spare parts will help you.... Thanks. So far I have stock retainers, a set of .120 stock thickness pads, and a set of .150 thickness aftermarket. The .150 definitely looks usable on the longer exhaust valves, so ideally I only need Qty 4 of a larger pad. 2 Quote Link to comment
banzai510(hainz) Posted February 9, 2021 Report Share Posted February 9, 2021 180 is getting a little top heavy on the ratainer. Im sure it will work untill they pop out. I dont know how they pop out of the stock reatainers and valve lash seemed OK. I figured the Z car guys would have inported these in the USA by now http://www.precisionshims.com.au/products/slotted 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 24 minutes ago, banzai510(hainz) said: 180 is getting a little top heavy on the ratainer. Im sure it will work untill they pop out. I dont know how they pop out of the stock reatainers and valve lash seemed OK. I figured the Z car guys would have inported these in the USA by now http://www.precisionshims.com.au/products/slotted Thanks, I just reached out to them. 1 Quote Link to comment
banzai510(hainz) Posted February 9, 2021 Report Share Posted February 9, 2021 let me know. Not that I need any but like to see how much they are ect......... maybe shipping cost more than the part!!!!!!!!!! 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 14 minutes ago, banzai510(hainz) said: let me know. Not that I need any but like to see how much they are ect......... maybe shipping cost more than the part!!!!!!!!!! I'll let you know what they come back with, and if you want to piggyback on my order just let me know what you want. 1 Quote Link to comment
Crashtd420 Posted February 9, 2021 Report Share Posted February 9, 2021 Well no luck.... The ones I have measured 160.... 2 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 (edited) 24 minutes ago, Crashtd420 said: Well no luck.... The ones I have measured 160.... Yeah. That's at least headed in the right direction! @banzai510(hainz) They got back to me already. Pads are $9 (~$7) each, and shipping is $29 (~$22.50) via Aussie Post, which could be anywhere from 5 days to a month. It looks like they have both the flat bottom, and pocket bottom pads, in incremental 0.25mm thicknesses. Let me know if you want anything, and I can tack it onto my order. Edited February 9, 2021 by mainer311 1 Quote Link to comment
banzai510(hainz) Posted February 9, 2021 Report Share Posted February 9, 2021 (edited) what I did I bought a whole assortment of pads when I intially bought mine. 150 -190 flat bottom. I done 2 motors and I used my 150(new cam) or 160s or 180s(regrind cam). if your a high roller I would buy close to what you think you need and plus and minus .010 meaning 3 sets . rememeber on regrinds you usually use bigger pads. I still have alot of lash pads and dont know if Ill get to using them but I still have new 2 cams and dont want to part with them yet. key is when the machinist get the motor he should size the valve stems and seat so one can use 1 lash pad size. I seen some motors where it was off alot between valves. I dont really need any. as I have a extra retainer set for the lash pads I have. REALLY i DIDNT FIND THIS LINK UNTIL RECENTLY.. There was a guy who sold DAMB cams saying you can use the stock retainers and never figured out how he did it. Im thinking this maybe was it with the button lashpads. the stock retainer are steel and stronger than the alum ones Now I just live thru you guys doing your mods!!! Edited February 9, 2021 by banzai510(hainz) 1 Quote Link to comment
mainer311 Posted February 9, 2021 Author Report Share Posted February 9, 2021 Sounds good. At least we know there’s a source! 1 Quote Link to comment
Crashtd420 Posted February 10, 2021 Report Share Posted February 10, 2021 44 minutes ago, mainer311 said: Sounds good. At least we know there’s a source! At first I thought the smallest size they had was 200.... it was 2mm... They have a nice range 2mm to 8mm..... keeping that link saved.... 2 Quote Link to comment
mainer311 Posted February 10, 2021 Author Report Share Posted February 10, 2021 Yup, definitely handy. I wonder if this guy realizes he has the market cornered? Since the valve lengths are different, I bought an assortment of Qty 4, since I figure they won’t be the same all the way across. This engine rebuild is getting ridiculous though. 2 Quote Link to comment
banzai510(hainz) Posted February 10, 2021 Report Share Posted February 10, 2021 (edited) here you go I finally refound this . This is a Ford Pinto Works with a Datsun L motor. everbody save this. makes it EZ to figure out For some reason I dont believe those net lift ratings datsun rockerarm ration is about 1.5 -1.48 on some other sourced. remember this is a FORD PINTO DRAWING 20years ago I would have only gotten those lash pads from Precisionshims if I knew about them. I figured the Z car guys woud have know about these guys long ago. But let you try them out first and see the review of BUY or NOT Edited February 10, 2021 by banzai510(hainz) 1 Quote Link to comment
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