how to find top dead center on chevy 350
| Username | Post: Finding top expressionless center. (Topic#330816) |
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| 1965C-ten Very Senior Fellow member Posts: 7875 Age: 44 Loc: San Tan Valley AZ "Phoeni... Reg: 11-18-01 User Info Send Private Topic | 11-27-15 01:18 PM - Post#2591848 This guy on summit shows how to find top dead middle with piston end. He so moves the pointer. Information technology seems right, but in my mind something seems like he just threw the whole thing off? I retrieve my timing indicator is something similar this. So on mine I would use the 0 marking as my reference with piston stop after hit going clockwise, mark dampner there, so crank it counter clockwise until it stops, mark dampner again at the 0 on timing tab? So make line correct in middle of the two marks and put timing record on at 0 right at the line, run engine with timing lite and 0 on timing tab is where my reference point is? Does timing record work better with a pointer? https://youtu.exist/RENhHI9n65I |
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| 1965C-10 Very Senior Fellow member Posts: 7875 Historic period: 44 Loc: San Tan Valley AZ "Phoeni... Reg: 11-18-01 User Info Send Individual Topic | eleven-27-xv 01:35 PM - Mail#2591852 In response to 1965C-10 Ok, hither is my story. In 2003 I bought a junky 1974 handbasket case shortbed chevy pickup for the large cake and TH400 transmission. The tune up decal showed it equally a 454, looked like 454, over the adjacent year I swapped the big block and TH400 in my 1965 Chevy pickup replacing a pocket-sized cake and TH350. I didn't know much about timing but thought I did, I ready HEI at 8 degrees before tdc as 1974 melody up decal said. Something seemed weird, it ran screwy at idle , and then I took the hei out of the pocket-size block and popped it in, improve. When I started driving it, and punched it, information technology seemed dissapointing. Mind y'all in the middle of this swap I bought a 1999 corvette with ls1 345 hp 350 ft pound torque with transmission 6 speed, so maybe I got used to really crawly power. Lets support to before I pulled engine and trans in parts truck, I putted it around private holding and would pare out for a second or besides, no room to bulldoze it far, it felt pretty hateful. Back to the aforementioned engine and transmission in the 1965 pickup, information technology's not horrible but doesn't seem whatsoever better than the small cake. I have been reading hither and other places and learnig more than most timing. Seems like I gear up the timing up retarded and am missing large power? Oh too it turns out the block numbers on pad on front passenger side in front if head, this is not a 454 but a 1968 pickup 396 310 horse engine. The exhaust really stinks likewise. Edited by 1965C-x on eleven-27-15 01:39 PM. Reason for edit: No reason given. |
| 1965C-10 Very Senior Member Posts: 7875 Age: 44 Loc: San Tan Valley AZ "Phoeni... Reg: eleven-xviii-01 User Info Transport Individual Topic | 11-27-xv 01:45 PM - Post#2591855 In response to 1965C-10 I have a dial back timing light, but seems I read by ignition man not to utilise that every bit information technology's not accurate like a plainly timing lite and timing tape. Seems he said punch back is for modern engines and takes into account knock sensors or something, not to utilize on old engines. Can I still use this timing light with punch fix to nix or practice I need a regular timing calorie-free? Edited past 1965C-ten on 11-27-15 01:47 PM. Reason for edit: No reason given. |
| LUVmachine Frequent Correspondent Posts: 1463 Age: 40 Loc: Redding Ca Reg: 10-02-14 User Info Transport Private Topic | 11-27-15 02:22 PM - Postal service#2591863 In response to 1965C-x You can employ the dial back if you go out the timing dial at zero. I have a snap on timing lite and also a timing tape on my balancer. My light seems to exist pretty authentic just every bit per ignitionmans advice I e'er go off of the timing tape. I would definitely bank check that the outer ring on the balancer hasn't slipped and double check your reference mark for your height dead centre. If zippo else try bumping your initial up about 2 degrees. Besides check to make sure your weights aren't hanging upwards and that you lot are getting all the advance in before 3000 rpm. 71 Chevelle BBC powered |
 grumpyvette Senior Chevytalk Moderator -- Operation Subject Matter Good -- Posts: 17733  Age: 74 Loc: farmersville texas United states Reg: 03-xvi-01 User Info Transport Private Topic | 11-27-15 02:55 PM - Post#2591873 In response to LUVmachine http://garage.grumpysperformance.com/index.php?thr... just similar on a sbc the timing marks on the damper and the timing tab may not reverberate reality and the dampers outer hub may have moved and then it requires verification the lower hp 396 BBC is not a bad engine to hop up , it just required someone familiar with the BBC to get it washed correctly IF You lot CAN,T Fume THE TIRES AT Volition,FROM A 60 MPH ROLLING Commencement YOUR ENGINE NEEDS MORE Work!!"! |
| 1965C-10 Very Senior Fellow member Posts: 7875 Age: 44 Loc: San Tan Valley AZ "Phoeni... Reg: 11-18-01 User Info Ship Individual Topic | 11-30-fifteen 02:39 PM - Mail service#2592495 In response to grumpyvette Non trying to be a pest, simply... The video where the guy marks the dampner, and so moves the pointer, this seems like he is throwing everything off? Seems he should accept marked the area in the exact middle of the 2 reference marks equally top dead center(on the dampner), non movement the pointer. Correct? |
| FleetsideLarry Member Posts: 620  Age: 77 Loc: Shellman Bluff, Littoral G... Reg: 01-08-03 User Info Send Individual Topic | 12-03-fifteen 04:56 PM - Post#2593158 In response to 1965C-10
So on mine I would utilize the 0 mark as my reference with piston finish after hitting going clockwise, mark dampner in that location, then crank information technology counter clockwise until it stops, mark dampner once again at the 0 on timing tab? And so brand line right in middle of the 2 marks and put timing tape on at 0 right at the line, run engine with timing light and 0 on timing tab is where my reference point is? Does timing tape work better with a arrow? with the timing tab like y'all have yous exercise as you described above using the tab's nothing as the "pointer". with a movable arrow like in the video you lot move the arrow, either way you're lining up a zero point in the center between ii marks. you're assuming that the arrow in the video was already at TDC, but if it wasn't, it would need to be moved. I thought the video does show him moving the pointer to the eye between the two marks, mayhap I need to spotter again with a tab like you lot take you lot don't really need a tape 'cause the caste marks are on the tab but a tape and arrow might exist easier to read Larry Edited by FleetsideLarry on 12-03-15 05:04 PM. Reason for edit: No reason given. |
| 0utlaw Very Senior Member Posts: 2794  Loc: US Eastward Coast Reg: 09-10-02 User Info Ship Private Topic | 12-03-15 06:22 PM - Postal service#2593178 In response to 1965C-10 A timing tape shows more than full degrees. You tin easily find a yous-tube video showing exactly how to install. The play a trick on is...clean your damper thoroughly of grease or oil with lacquer thinner so it sticks well. You can use a timing tape to plot a total curve on a modified engine for street utilize. It probably would not be needed on a stock motor. |
| 1965C-10 Very Senior Member Posts: 7875 Historic period: 44 Loc: San Tan Valley AZ "Phoeni... Reg: eleven-18-01 User Info Send Private Topic | 12-03-fifteen 06:29 PM - Mail service#2593181 In response to FleetsideLarry I'm supposed to discover out what my "total" timing is, the base which I have at 8btdc, and how much "mechanical advance" is. So far I merely know information technology's set up at 8btdc at idle with vacuum advance line pulled and plugged. The engine is pretty weak, compared to my Corvette LS1, so I want to know if I'm leaving ability on the table with timing. Possibly this 396 is simply a putt putt. |
| 1965C-10 Very Senior Member Posts: 7875 Age: 44 Loc: San Tan Valley AZ "Phoeni... Reg: eleven-xviii-01 User Info Send Individual Topic | 12-03-fifteen 06:32 PM - Mail service#2593182 In response to 1965C-10 Information technology may non fifty-fifty be sat at 8btdc, as I merely causeless line on damper and chrome timing tab were correct. So who knows what it is until I get piston stop. |
| bowtie44s Valued Contributor Posts: 4290  Historic period: 39 Loc: wv Reg: 08-29-12 User Info Send Private Topic | 12-04-15 06:54 AM - Post#2593250 In response to 1965C-10 A piston cease is easy to make out of an erstwhile spark plug. Cut the crimp, knock out the porcelain, run a ? tap through it and thread in a ? railroad vehicle bolt. Only accept out all the other spark plugs so it rolls easier and you don't jam the piston into the bolt. Just my opinion, throw that dial light in the trash. A skilful one may be ok, but I had a cheap one that was off 10°. Information technology caused me all sorts of problems. Timing tape is much improve. The tape peels off easy. I similar to stick information technology on and spray it with clear paint. If y'all spray it while it's running, yous can but spray ane spot for a few seconds. Those timing tabs are hard to read. I prefer a single bespeak. Jeff '88 Chevy K3500, aluminum head roller cam 511in³ stroker 10.5:1 compression, 96 NV 4500, 94-98 grille, 305/70-16 (33x12) BF Goodrich KM2s, 91 cluster bandy |
| LUVmachine Frequent Contributor Posts: 1463 Age: twoscore Loc: Redding Ca Reg: 10-02-14 User Info Send Private Topic | 12-04-15 07:50 AM - Post#2593256 In response to bowtie44s Two things come up to my mind about installation of the timing tape. 1. Brand sure you get the right size for your dampner. 2. If the dampner is off the engine brand certain yous orient the tape so it reads in the right management. I did this a couple of weeks ago and put information technology on backwards. It was just i of those dumb things that happened to me when I was getting anxious to get my truck back together. 71 Chevelle BBC powered |
| FleetsideLarry Member Posts: 620 Age: 77 Loc: Shellman Barefaced, Coastal G... Reg: 01-08-03 User Info Send Private Topic | 12-04-15 11:13 AM - Post#2593306 In response to LUVmachine
make sure you orient the tape so it reads in the right direction. yes, easy to get confused about this, recall the numbers on the tape will increment in a clockwise direction from zero, just the opposite of what they do on your tab
one of those impaired things that happened to me when I was getting broken-hearted to go my truck back together. I idea that only happened to me Larry |
| LUVmachine Frequent Contributor Posts: 1463 Historic period: 40 Loc: Redding Ca Reg: ten-02-14 User Info Transport Private Topic | 12-04-15 05:21 PM - Post#2593352 In response to FleetsideLarry Larry, it happens to the all-time of united states of america. Sometimes I over think things and other times I don't think the really important things through. Simply i affair for sure I e'er learn the hard way. 71 Chevelle BBC powered |
| 65_Impala Very Senior Member Posts: 4900 Reg: 12-29-02 User Info Transport Private Topic | 12-05-15 09:42 AM - Post#2593466 In response to 1965C-ten The video doesn't explain the arrow moving chip at all. Really poorly done. From that camera perspective it appears that he marked the damper backside the pointer. So, he moved the arrow to lucifer how far behind he was marking. Of course, there was no shut up video or explanation so I'thou somewhat guessing using the video I can see. The side by side video that came up on YouTube had a much better explanation and he made some actress comments on things similar how to permanently marker the balancer. https://www.youtube.com/watch?five=xg6eAWWvrPA As for a dial back timing light. It depends on how practiced information technology is. I've used a Snap-On on EFI engines and it matched the timing programmed into the estimator. Now, a inexpensive one may have a time delay error and whatsoever of them can have bug with multiple spark discharge ignition boxes. |
| LUVmachine Frequent Contributor Posts: 1463 Historic period: xl Loc: Redding Ca Reg: x-02-14 User Info Send Private Topic | 12-05-15 06:58 PM - Post#2593580 In response to 65_Impala I'yard pretty impressed with my snapon light. I apply information technology along with my timing tape and it seems to be right on. I also like the fact that it has a button that changes the digital read out to a tachometer. 71 Chevelle BBC powered |
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