Because perfect alignment of the engine and transmission are not possible, the flexplate can absorb the minute misalignment. Bd duramax flexplate 2500 3500 automatic transmissions 2001 2012. Diesel power products carries the bdpower black flexplate for 07. The background is made of mirror polished stainless steel which is 1mm thick and weighs 1 lb. Im pretty damn sure i broke my fourth flexplate on the truck. Jan 19, 2011 i have a cracked flex plate im told i might need a flex plate, torque converter and possibly a front pump bearing. Apply a small amount of threadlocker to each torque converter bolt and start all bolts by hand. Remove the torque converter cover and inspect with a light. Well i found one about 3 inches long coming off of a bolt hole that connects it to the tq converter. If the source of the noise is detected from the bell housing, remove the transmission to inspect the flywheel for any cracks. Give a guess in the comments section and stay tuned. Chevrolet silverado 2500 hd flex plate flywheel plate.
Ats diesel billet flexplate for gm duramax 20012004 6. I noticed a low deep noise i couldnt recognize like it was from the exhaust. Flywheel mounting bolt 74070 dorman products 74070. We specialize in a widevariety of highquality car parts and accessories for your car, truck or suv. Featuring twice the material of the stock flex plate, these units are billet machined, precision balanced. Recommended for replacement when servicing flywheel. Bd billet steel flex plate 0118 gm duramax diesel power products. Socal duramax billet flex plate06 lly, lbz, lmm socal. Dont forget your duramax arp flexplate bolts high performance series to go along with your flex plate. Using the oval hole in flex plate as a starting point may ease torque converter bolt installation figure 1. The same things that cause the flexplate to crack can also cause transmission problems. I hadnt removed the inspection plate yet to see if i had a broken tq converter bolt or a cracked flex plate. Unless otherwise marked, all engines and parts are for competition use only.
I also ended up dropping the upper oil pan as well. Designed to handle up to 1500 ftlbs of torque, the new duramax black oxide coated flexplate is corrosio. Designed to handle up to 1500ftlbs of torque, the new duramax black oxide coated flexplate is corrosion resistant to prevent hydrogen embrittlement, billet machined and precision balanced for ultimate strength. Suncoast zero balance flexplate internally balanced. Aug 30, 2014 every tranny guys knows of the one flex plate to tc mount hole thats not elongated and allows for the centering of the remaining mount holes so you turn the crank once to install and tighten the bolts instead of twice i never had a cracked flexplate to fix, i may suggest an aftermarket plate if avail to handle the stress, idk what else to say. Jul 11, 2012 i took in my 2005 chevrolet duramax diesel to dealer with cracked fly wheel and flex plate. Xdp carries all the parts and accessories you need for the best diesel. The sun coast 64bfp billet flex plate for your 20082010 ford 6. This is a must with the high torque in conjunction with a better designed torque. Bd diesels black flexplates are designed to reliably handle 1,500 ft. Tighten all crankshaft bolts an additional 60 degrees in sequence. Featuring twice the material of the stock flexplate, these forged billet units are precisionbalanced and sfiapproved for use in racesanctioning bodies. Free shipping on many items browse your favorite brands affordable.
To diagnose this concern, use chassis ears or a stethoscope to determine if the noise is coming from the bell housing. Install flywheel washer on the bd flexplate ensure the. I dont know what happened 1st but all the bolts were broken, the flex plate was cracked and about an 18 of it was completely sepearated. Balancing is not needed, but its nice to do on the lb7lly these are drop in replacement on this motor. Alot of the time that those flexplates crack is because the converter bolts or the flex plate to crank bolts work loose. Mine cracked all over the place on me, didnt know it until i was doin some instals though and when i removed the starter i seen.
Our flywheel bolts provide a convenient repair solution, ensuring you have the boltwith the correct head size, length, and thread pitch. I had the transmission rebuilt thinking it was the flywheel or torque convertor and wasnt the problem but transmission was in. Socal diesels billet flexplates are lighter and stronger than stock they meet the new sfi 29. I had posted a similar question when i first got my vehicle around sep. Unlike other manufacturers, bd is reusing the stock flywheel assembly to reduce costs and unnecessary part changes.
Cracked flywheel housing surprise archive duramax diesels. Duramax diesels forum duramax diesel technical mike ls trans talk cracked flywheel housing surprise. This flex plate upgrade is perfect for towing, street, racing and sledpulling. The bd flexplate is proven to handle over 2000 lbft of torque, or up to 3500 lbft with the addition of the bd slip eliminator shim kit. Similar in function to a flywheel in manual transmission engines and called a flexplate due to its expansion, or flexing, during the.
Bds duramax black flexplate is designed to reliably handle up to 1,500 lbft of. Chevrolet silverado 1500 questions loud knocking noise 5. Put a new flex plate in, it must have been a newer style but still worked. I have a loud knocking noise coming from the engine. Buy performance transmission flex plates at alligator performance.
I went to the dealer today to buy new fluids that i need for the transmission and the guy at the part. The truck has a lift kit and dealer told me not covered under gm warranty, etc. Injector knock or cracked flexplate diagnosis w 2009 chevrolet duramax lmm dually. I have had one do that before, and it sounds exactly like what you are describing. At first i thought it was comin from the top but when i get under it its alot louder sounds like its comin from the oil pan.
At high speeds, the flexplate like most engine parts endures a considerable amount of strain and stress. Designed to handle up to 1500 ftlbs of torque, the new duramax black oxide coated flexplate is corrosion resistent to prevent hydrogen embrittlement, billet machined and precision balanced for ultimate strength. The flexplate was broken in a complete circle just outside the crank bolts. I took in my 2005 chevrolet duramax diesel to dealer with. Fits 20012016 duramax with internally balanced crankshaft. I went to the dealer today to buy new fluids that i need for the transmission and the guy at. Flywheel may not be loose but cracked especially between the bolt holes to the crank. And we also have heavyduty and sfiapproved flexplates for highhorsepower, highrpm race applications. This leaves nearly a 14 inch gap between the mounting holes in the converter and the face of the flex plate. The truck has a lift kit and dealer told me not read more.
Search our online flex plate catalog and find the lowest priced discount auto parts on the web. Zero balance flexplates are required for use on internally balanced crankshafts like the callies ultra billet, callies magnum billet, and wagler billet crankshafts. Buy arp 2302901 flexplate bolt kit for gm duramax 6. I would replace both sets of bolts regardless, theyre too inexpensive not to, closely inspect the converter and locktite the new bolts.
Im thinking it is a specific diameter or teeth selection. Here at driving line, weve spent inordinate amounts of time spelling out just how capable the duramax is in the performance sense, but weve never poured over the finer detailsthe nuts and boltsthat make gms 6. Injector knock or cracked flexplate diagnosis series featuring my 2009 chevrolet duramax lmm dually. Dont take any chances on running a stock flex plate that might be cracked from the high stress of your high. I just thought id post a short video of what a cracked flexplate on a 6. I took in my 2005 chevrolet duramax diesel to dealer with cracked fly wheel and flex plate. What a cracked flexplate looks like on a 2001 chevy silverado 2500hd 4l80e transmission. Shop bdpower heavy duty flex plate 1041260 for the 20012018 gm 6. The one i heard was on my brothers 89 34 ton ext cab with a 350. This replaces the factory flywheel flex plate with a improved billet steel onepiece design and eliminates the heavy cast iron and. Does anybody have a link to the sfi vortec style flexplate. This replaces the factory flywheel flex plate with a improved billet steel onepiece design and eliminates the heavy cast iron and the weak stamped steel flex plate. Or torque convertor nose that engages the pump maybe cracked or broke. Suncoast duramax billet flex plate 0610 lbz, lmm a1bfp.
Will not work with factory or nonbillet converters. A cracked flex plate is almost always a sign of other problems. Installation should occur on a vehicle properly secured to prevent rolling. Discussion duramax 20012004 lb7 blewup my flexplate. You will find that the lip around the outside of the flex plate bottoms against the outside rim of the torque converter. The unwary wont notice especially since it is so hard to see up in there. Socal duramax billet flex plate danville performance. Thread each into the torque converter until they are all finger tight. Be sure to install alignment pin between new flexplate and crankshaft hub to insure proper alignment. Bds duramax black flexplate is designed to reliably handle up to 1,500 lbft of torque. Duramax diesels forum duramax diesel technical duramax hard parts lly lly. Remove the inspection cover from the driver side of the bell housing see if the converter is loose.
Duramax 1116 lml billet flex plate socal diesel inc. Removed the trans last night to install my new transmission and found the. This time around, i know they make an sfi approved flexplate that will handle anything, and im putting the sucker in. With increased torque from the engine, it can crack andor rip the center out of a stock flex plate. A couple thoughts about the clunking heavy noise in the bell housing area. Arp flex plate bolts for 20012010 gm duramax learn more. Start the engine, put in drive, foot on the brake, give it some rpm, does that quiet the noise loose bolts and cracked flex will usually be less noise doing that. The power and torque that modified duramax engines deliver can crack or even shatter the stock flexplate. I listens to pat and instead of putting 8 bolts back in the flex plate flywheel i put 4 in it star shape. Yesterday the flex plate on my 2000 toyota 4runner w 155k miles was replaced.
Fix for all lb7 and newer trucks with cracked pistons. A mirror andor opaque color laser cut acrylic design is permanently attached to the stainless steel surface to create a threedimensional finish. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. It cracked and started making noise around 80,000 miles. Gm performance view topic broke my fourth flexplate. The rear cover came loose pretty violently and ended up ruining the dowels in the upper pan anyways. I glanced over the truck and couldnt figure it out but the.
The truck had a new engine block installed at 17,000 miles. When additional horsepower and torque are added to your duramax, you run the risk of cracking the stock flexplate. Duramax lb7llylbzlmm stock rebuild package creatures. No problems as of yet and the tranny shifts harder not then before. This is a must with the high torque in conjunction with a better designed torque converter that can transfer the torque with no. The bd flex plate is designed to handle up to 1500 ftlbs of torque and is billet machined and precision balanced for ultimate strength.
I am running this on my truck and wouldnt have it any other way. Weve got tough yet affordable flexplates for stock and mildly modified street vehicles. The sun coast a1bfp billet flex plate for your 20012005 gm 6. I bought this truck new and custom ordered from the factory and took delivery on october 9, 2003. Black oxide coated to resist corrosion and prevents hydrogen embrittlement that can cause cracking, these units will fit any oem or aftermarket torque converter. Archive cracked flywheel housing surprise mike ls trans talk. A vital part of an automobile engine equipped with automatic transmission, a flexplate consists of a piece of thick sheet metal that bolts to the crankshaft and torque converter. Dont take any chances on running a stock flex plate that might be cracked from the high stress of your high horsepower truck.
I went to the shop and looked it over and never seen anything like it. The symptom was a ticking sound under certain conditions. I also found it was seeping a little oil so i figured i would reseal it while i had everything apart. With increased torque from the engine and no slip out of the converter it can crack andor rip the center out of a stock flex plate. To me it sounded like a mad woodpecker somewhere under the truck. There are no side bolts with this kit only 36 head bolts or replace these by adding on the arp headstud kit above. I have a 05 crew cab and a few weeks ago i noticed a ticking coming from the bell housing, i asked a friend who drive a duramax and he said to pull the starter and check for cracks in the flex plate. When it develops a crack, it cannot function as intended and one consequence involves a loss of power at high speeds. A sfi certified flywheel flex plate is re quired on drag. Designed to handle up to 1500 ftlbs of torque, the new duramax black oxide coated flexplate is corrosion resistant to prevent hydrogen embrittlement, billet machined and precision balanced for ultimate strength. What are the likely causes of failure so maybe i wont do it again. Duramax allison flexplate chevy 20012018 1041260 bd diesel. We offer high quality new, oem, aftermarket and remanufactured chevrolet silverado 2500 hd flex plate parts.
Chevrolet silverado 2500 hd flex plate flywheel plate atp. There are tough flexplatesand there are chuck norriscaliber flexplates. Jun 21, 2007 i took in my 2005 chevrolet duramax diesel to dealer with cracked fly wheel and flex plate. Bd diesel performance flexplate for silverado sierra 2500.