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#121
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Good news is the engine is much quieter. There is now just one lifter making some noise, instead of all of them. I will post a video of before and after later. Probably not for a few days though.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#122
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I would say 1/4" should be plenty. If it is wide enough, .040" may work, but I might feel more comfortable at .060", and as wide as the 1/4" hole, so it has all the volume it needs.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#123
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Lifters would probably machine a tad nicer with a carbide bit with a very small radius corners. I could tell from the picture of the lifter that something wasn't happy.
Do you mean a lifter bore jig something like this? |
#124
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Picture of the block when done would be great. I'm ready to assemble my roller motor now but on hold waiting for the outcome here. Timing of this thread was perfect for me and I'm sure many will benefit from it. Thanks much Paul!!
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#125
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Yes, lifter body was very hard, and hard to cut. You drawing is close, just need a lot more room to work through.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#126
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Think I'm just going to bail, and go back to solid rollers.
Still not clear how some have no noise though. Maybe the base circle, and/or the location of the hole in the lifter bore? I would think the holes in the lifter bores would be somewhat controlled, and consistent? Not clear how some get replacement lifters for noisy ones that end up quiet either. What, tightening up the internal clearances makes them less sensitive to the volume of oil they get? .
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
#127
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Eventually I will get around to pulling my valley pan to see whether the oil band on my new Comp 857's lines up with the oil holes in my IA2 block. For now, the lifters seem quiet, the car runs great, and the combination is exactly what SD Performance seems to sell hundreds of, so I think everything is going to be ok. |
#128
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Thinking out loud
Just talking about making what you got work.
Could you get a little longer pushrod and adjust a set of HR's from the bottom up instead of top down?? Then just set them at what ever gap like they were solids. I'm puzzled by some noisy in one engine and not in another. It sounds like spring pressure is out running bleed down rate on the lifter. Weak plunger spring? Faulty check valve? Their not recovering for some reason when the valves are closed. If the plunger cup is full, looks like the lifter would refill.
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All the federales say,they could've had him any day They only let him slip away, out of kindness...I suppose Poncho & Lefty |
#129
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#130
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So which are the best HR lifters for Pontiacs?
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#131
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What about the short travel Johnson HR lifters Butler sells?
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#132
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Not sure if those are the ones Paul was referring to here:
http://forums.maxperformanceinc.com/...2&postcount=53
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '69 LeMans Vert, 350, #47 heads: work in progress |
#133
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Lets see if this works.Email from Dave at SD.Tom
https://mg.mail.yahoo.com/neo/b/mess...OTVulw&fromId= |
#134
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Access denied on my end. It's likely tagged to your individual email account. You'll probably need to copy/paste.
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-Jason 1969 Pontiac Firebird |
#135
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I did copy and paste.Tom
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#136
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try again
Oh my word!!! I don't have time to read all that but FYI the new Comp 857's previously sold as 857S (the ones you have been using) have the oil band 1/4" higher than the old style 857's which sure look like the Johnson lifters and I've had them in the shop and the oil band is in the same location so this might be a big part of why the new 857's have been working so well. Not saying I haven't had any issues but it's been a fraction of a percent of what we've sold and in one case I'm convinced the customer wrecked them by bottoming them out instead of following the correct installation instructions. Everyone seems to like to dump on the Comp lifters but I've had plenty of customers with issues with all of them and in my opinion the current 857's are a good lifter that has been very reliable overall. I'm stupid busy in the shop for the next few days so I don't need a distraction but you're more than welcome to share the info I just shared with you and thanks for the heads up on the thread. |
#137
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There you go!Tom
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#138
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Thanks for sharing the information!
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-Jason 1969 Pontiac Firebird |
#139
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You gotta love Dave though. The guy is a machine. He really has no use, or time, for forums.
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
#140
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The Johnsons bodies go straight town the sides where the roller shaft is.The Comps are rounded just above the end of the lifter body.Might be made by Johnson but to diff specs by Comp.Not sure how high the bottom of the oil band or where the oil hole is located on the Johnsons but in my pic you can see were they are located from the face of the roller with the rule next to it.Tom
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