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Everything posted by A to Z
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12-13-2022 UPDATE: So, I went ahead and prepped the garage for the engine build, etc. Just waiting on pistons, and then waiting in line for machine work on the block. The cool alternator adjustment bracket I found on eBay arrived as did my shifter I got from Steve Ehlers. Transmission is at Precision Standard Transmissions locally getting a rebuild.....waiting for my K case 4.11 R180 rear diff to arrive as well.
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12-9-2022 UPDATE. Trans arrived last night. I took some pics and loaded it in the trunk. It goes to Precision Standard Transmissions here in Colorado Springs for a rebuild....will drop her off today! Also got a shifter for it, and the new bushings so I can sart playing with the way the shifter sits in the car and make any mods necessary after the rebuild and the tranny is in the car. Here are a few pics from last night.
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12-8-2022 UPDATE: Ok, so I dropped off my LD28 Diesel V07 crank at the machinist to check out. All of you who said I better do that? You were right. Crank has .005 of runout, and all rod and main jounrals need to be turned. So, they are going ahead with that, and will take the runout to zero. About 350 bucks and money well spent. The oil seal journal does have a groove in it, but my speedi sleeve will handle that. Pistons are almost here, then the block goes in for work. All a process.
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12-8-2022 UPDATE: Ok, so I dropped off my LD28 Diesel V07 crank at the machinist to check out. All of you who said I better do that? You were right. Crank has .005 of runout, and all rod and main jounrals need to be turned. So, they are going ahead with that, and will take the runout to zero. About 350 bucks and money well spent. The oil seal journal does have a groove in it, but my speedi sleeve will handle that. Pistons are almost here, then the block goes in for work. All a process.
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waiting parts. Pistons to arrive soon.....I dropped the crank off at the machinist to check it all out.
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Twin cam head for the L6 from Derek at Datsunworks
A to Z replied to Derek's topic in Nissan L6 Forum
I just returned from a vacation in California. While there I went over and talked to Deve Rebello. I know you work with him on these heads. A short talk with him sold me on your Datsunworks head over the OS Giken head. Keep up the good work! -
11-23-2022 UPDATE. I jumped off into the deep end yet again. To go with my stroker engine.......I bought a 5 speed manual trans! I already have the pedal box for a manual trans. I can buy a brand new conversion kit from Godzilla raceworks. I was going to just get a 4 speed since they are so much cheaper, but at the last minute I decided to do this. It is out of a 1980 280ZX NON Turbo car. So, it is the desireable close ratio unit. There is a shop in Colorado Springs, Precision Transmission, who will rebuild it for me. Crossing fingers as some parts are NLA ( no longer available).....so hope fully the bearings and syncros are all that will be needed. Also went ahead and got the engine plate for manual trans. Dirty as heck.....needs my "golden touch". Other than the conversion kit, I need, a shifter, a couple of shifter boots, inner and outer, and a new starter.......would be nice to get a NOS one, who knows. Anyway, that's the news..... here are a few pics of the stuff. I got it on eBay.
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Have any of you had luck with a twin turbo setup on the L series. Seems that 2 small turbo's might help with lag and really provide a movre livable street setup
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11-17-2022 UPDATE: I found myself in the Bay Area for a few days, so I took some time and drove out to Antioch to meet Dave Rebello and his crew. Very nice guys, and the tips for building my engine were extraordinary. 50 years of doing this means a lot of good knowledge to gain. While there I picked up the Harmonic Balancer I need for the stroker crank and checked up on the pistons. Guys were so nice they took the balancer into the back and honed it.....for street applications, Dave said it needs to be honed.....when I told him I would hone it with my drill on my leg he handed it to one of his guys and they went and did it proper! Pistons almost ready. Amazing that the quality control is so good nowadays. The chief engine builder, Mark, was telling me the last 20 SETS of pistons from TRAUM, all rings were to spec, and DIDN'T even need to be filed to fit. INCRDIBLE! Also saw out front awaiting shipment a 2.5 stroker heading to europe, 13.0 to 1 compression race engine, Dave told me numbers and I don't remember but it was WAY more than 300.....almost 400. Mark said from idle to 8000 it is a beast! I also snapped a pic for a dyno chart from a 2.7 street build he did that showed torque way above 200 all the way across.....I hope, I hope!
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Thanks. I am trying to. 11-17-2022 UPDATE: I found myself in the Bay Area for a few days, so I took some time and drove out to Antioch to meet Dave Rebello and his crew. Very nice guys, and the tips for building my engine were extraordinary. 50 years of doing this means a lot of good knowledge to gain. While there I picked up the Harmonic Balancer I need for the stroker crank and checked up on the pistons. Guys were so nice they took the balancer into the back and honed it.....for street applications, Dave said it needs to be honed.....when I told him I would hone it with my drill on my leg he handed it to one of his guys and they went and did it proper! Pistons almost ready. Amazing that the quality control is so good nowadays. The chief engine builder, Mark, was telling me the last 20 SETS of pistons from TRAUM, all rings were to spec, and DIDN'T even need to be filed to fit. INCRDIBLE! Also saw out front awaiting shipment a 2.5 stroker heading to europe, 13.0 to 1 compression race engine, Dave told me numbers and I don't remember but it was WAY more than 300.....almost 400. Mark said from idle to 8000 it is a beast! I also snapped a pic for a dyno chart from a 2.7 street build he did that showed torque way above 200 all the way across.....I hope, I hope!
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11-4-2022 UPDATE. I have ordered more parts for the engine build. I got some NOS Nissan main and rod bearings, a cleaned up and restored front cover, New Nissan NOS oil pump, New NOS Nissan water pump, and in talking to Dave Rebello, found out that these V07 Diesel cranks don't "like" stock harmonic balancers.......He sells a single pulley variant of BHJ harmonic balancers which have been designed and are successful in handling the harmonics that the extra stroke brings to the table. He also stated that for some reason, 6400 RPM is a point where the engines show a great deal of harmonic disturbance, and that it is best if guys avoid that RPM, shoot right through it or shift before it, but make all efforts from doing anything that holds the engine at that precise RPM. Food for thought. He also said that racing and hot street engines, have shown that the factory torque specs for various parts is not near tight enough, case in point the harmonic balancer instead of being factory spec'd at 120 ft/lbs torque, should be 150! Flywheel botls are another he mentioned......he recently had another guy lose his harmonic balancer, just fell off! So, Dave Rebello at Rebello Racing woud be a good call for anyone doing a lot of high RPM stuff.
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11-4-2022 UPDATE. I have ordered more parts for the engine build. I got some NOS Nissan main and rod bearings, a cleaned up and restored front cover, New Nissan NOS oil pump, New NOS Nissan water pump, and in talking to Dave Rebello, found out that these V07 Diesel cranks don't "like" stock harmonic balancers.......He sells a single pulley variant of BHJ harmonic balancers which have been designed and are successful in handling the harmonics that the extra stroke brings to the table. He also stated that for some reason, 6400 RPM is a point where the engines show a great deal of harmonic disturbance, and that it is best if guys avoid that RPM, shoot right through it or shift before it, but make all efforts from doing anything that holds the engine at that precise RPM. Food for thought. He also said that racing and hot street engines, have shown that the factory torque specs for various parts is not near tight enough, case in point the harmonic balancer instead of being factory spec'd at 120 ft/lbs torque, should be 150! Flywheel botls are another he mentioned......he recently had another guy lose his harmonic balancer, just fell off! So, Dave Rebello at Rebello Racing woud be a good call for anyone doing a lot of high RPM stuff.
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S30 and S130 Automatic transmission performance.....the JATCO 3N71B
A to Z replied to A to Z's topic in Drivetrain
good to know, thanks. -
What I was able to figure out, was the size they are now, and what size in diameter they would be if the crank was turned .010 under. Because I am a LONG way from being that size, I know that I am within tolerances. It might not be scientific, but if an engine is a hair loose, using thicker oil can and will make up for it. 20W50 can make an engine with 35-40 psi of oil pressure at idle have about 10 more! My intention, is to plastigauge it when I put it together on the mains and rod journals, and use 20W50 if she is a little loose. I am betting it won't be loose at all...it will be just fine and will warrant 10W40 oil. When I start it and the oil gauge goes past the halfway mark?.....success. This is being built as a stock motor, to be used within the power band of the early 240Z "A" grind cam and E31 head with small ports and small valves, the cam maxxes out at 5600 RPM! 4300 for torque. Just a lot of torque. I am going to advance it to #3 on the timing upper sprocket per Dave Rebello's suggestion. I am doing this the opposite of what everyone else does in the Z car world. 6K would be the absolute max RPM the engine will ever see. I just put it in drive and go! It shifts at peak torque anyway, 4300-4500 rpm.
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10-20-2022 UPDATE: My Arizona Z car aluminum oil pan arrived today as well as my Brass freeze plugs. Couple pics and a video link to click on to go see. Flip through the pictures the video is at the end. Link to video, click below: (11) Facebook
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10-19-2022 UPDATE: Arrival of gaskets and seals, and timing chain for the build. All Nissan parts and the Timing Chain is from Japan as well. I don't feel good about using chinese timing chain components.....The Z Car Depot was able to fit the bill this time. I additionally received my sleeves to go over the crank snout and rear main seal area(s) to ensure that I get a oil leak free seal. My garage is getting full again.....Pics follow:
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10-19-2022 UPDATE: Arrival of gaskets and seals, and timing chain for the build. All Nissan parts and the Timing Chain is from Japan as well. I don't feel good about using chinese timing chain components.....The Z Car Depot was able to fit the bill this time. I additionally received my sleeves to go over the crank snout and rear main seal area(s) to ensure that I get a oil leak free seal. My garage is getting full again.....Pics follow:
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10-19-2022 UPDATE. Mic'ing the stroker crank for my engine build. So, the micronometer I ordered on Amazon came in and I went ahead and masured my crank. All journals are within spec for standard bearings per the Factory manual under "EM Mechanical". I have attached a form showing my recordings which were right on for all 14 bearing surfaces and the crank snout. Because there can be the question on whether or not I didn't take it out enough decimal points, I attached another form, showing what the measurement would have had to be to step up to a thicker bearing for an udnersized ground crank. Sure, there will be some with the "but, but, but...." and I accept that, for an engine that is being built like a race engine with a redline in the stratosphere.....but mine is building build to stock specs and a 6,000 RPM redline. My cam maxxes out at 5600 RPM anyways (for horsepower, for torque around 4500 RPM). if I want more oil pressure, I just use the thicker 20W50 oil instead of 10W40.....just remember the ZDDP additive. So, here they are, think what you will.