Valve timming did timming chain and intake valve nicking piston ? i put gold marks on chain to marks on gears.but like i said i did this thrre times and the right head ,the intake valves are just nicking the pistons ?

/* override srp image link color and background color */ .galleryImage { background-color: #002F56; color: rgb(0, 47, 86); } Fig. 1 Front cover pry pointsFig. 2 No. 1 piston TDC positionFig. 3 No. 1 piston TDC alignmentFig. 4 Camshaft TDC alignmentFig. 5 Timing chain alignmentFig. 6 Lefthand cam phaser alignmentFig. 7 Timing chain alignment marksFig. 8 Upper intake manifold tightening sequenceFig. 9 Valve cover tightening sequence. LefthandFig. 10 Valve cover tightening sequence. Righthand Print Options Print Text Only Print Text and images Print Timing Chain, Replace Caution: The magnetic timing wheels must not come in contact with magnets or any other strong magnetic field. This will destroy the timing wheels ability to correctly relay camshaft position to camshaft position sensor. 1. Disconnect battery ground cable. 2. Remove air cleaner housing assembly. 3. Remove upper intake manifold. 4. Remove valve covers. 5. Remove spark plugs, then raise and support vehicle. 6. Drain cooling system into suitable container. 7. Remove upper and lower oil pans. 8. Remove righthand engine mount bracket. 9. Remove bolts from front cover. 10. Carefully remove front cover by carefully prying at seven indicated points, Fig. 1. 11. Rotate crankshaft counterclockwise to place No. 1 position at TDC on exhaust stroke by aligning dimple on crankshaft with block/bearing junction, Fig. 2. Lefthand side cam phaser arrows should point toward each other and be parallel to valve cover sealing surface. 12. Mark rotation direction of following timing chains for reference during installation: a. Lefthand side cam chain. b. Righthand side cam chain. c. Oil pump chain. d. Primary chain. 13. Reset righthand cam chain tensioner by pushing back tensioner piston and installing tensioner pin tool No. 8514, or equivalent. 14. Reset lefthand cam chain tensioner by lifting pawl, pushing back piston and installing tensioner pin tool No. 8514, or equivalent. 15. Disengage oil pump chain tensioner spring from dowel pin, then remove oil pump chain tensioner. 16. Remove oil pump sprocket T45 retaining bolt, then remove oil pump sprocket and oil pump chain. 17. Install righthand camshaft phaser lock tool No. 10202, or equivalent. Minor rotation may be required to install camshaft phaser lock. 18. Loosen both intake oil control valves, then exhaust oil control valve. 19. Remove righthand camshaft phaser lock tool, then oil control valve from righthand side intake cam phaser. 20. Pull righthand side intake cam phaser off of camshaft, then remove righthand side cam chain. 21. Remove oil control valve, then pull righthand side exhaust cam phaser off camshaft. 22. Install lefthand camshaft phaser lock tool No. 10202, or equivalent. Minor rotation may be required to install camshaft phaser lock. 23. Loosen both intake oil control valve and exhaust oil control valve. 24. Remove lefthand camshaft phaser lock tool, then oil control valve from lefthand side exhaust cam phaser. 25. Pull lefthand side exhaust cam phaser off of camshaft, then remove lefthand side cam chain. 26. Remove oil control valve, then pull lefthand side intake cam phaser off of camshaft. 27. Reset primary chain tensioner by pushing back tensioner piston and installing tensioner pin tool No. 8514, or equivalent. Remove two T30 bolts, then primary chain tensioner. 28. Remove timing chain. 29. Reverse procedure to install, note following: a. Verify No. 1 piston is positioned at TDC by aligning dimple on crankshaft with block/bearing cap junction, Fig. 3. b. Verify camshafts are set at TDC by positioning alignment holes vertically, Fig. 4. c. Ensure timing chain plated link is located at 12 o'clock when dimple on crankshaft is aligned with block/bearing cap junction, Fig. 5. d. Position lefthand side cam phasers so that arrows point toward each other and are parallel to valve cover sealing surface, Fig. 6. e. Torque idler sprocket bolt to 18 ft. lbs. f. Torque oil control valve to 110 ft. lbs. g. Torque oil pump sprocket bolt to 18 ft. lbs. h. Ensure there are 12 chain pins between exhaust cam phaser triangle marking and intake cam phaser circle marking, Fig. 7. i. Torque upper intake manifold bolts to 80 inch lbs., in sequence, as illustrated in Fig. 8. j. Torque lefthand valve cover bolts in sequence, as illustrated in Fig. 9, to 106 inch lbs. k. Torque righthand valve cover bolts in sequence, as illustrated in Fig. 10, to 106 inch lbs. l. Torque timing chain tensioner to 106 inch lbs. m. Torque timing chain guide to 106 inch lbs.
Print - As Shown Print - Fit To Page / 1

• Fig. 1 Front cover pry points
• Fig. 2 No. 1 piston TDC position
• Fig. 3 No. 1 piston TDC alignment
• Fig. 4 Camshaft TDC alignment
• Fig. 5 Timing chain alignment
• Fig. 6 Lefthand cam phaser alignment
• Fig. 7 Timing chain alignment marks
• Fig. 8 Upper intake manifold tightening sequence
• Fig. 9 Valve cover tightening sequence. Lefthand
• Fig. 10 Valve cover tightening sequence. Righthand

Sounds like you got a gear for a V6, They have multiple marks, you line the chains marks up with either the Intake or exhaust mark, and the 3rd mark points at a place on the engine block.

Just use the old gear if you can, they rarely go bad.

There is a Toyota Technical Service Bulletin issued for this:-
T-SB-0291-08 September 11, 2008 2GR-FE Valve Timing

Procedure Service Category Engine/Hybrid System Section Engine Mechanical Market USA Applicability YEAR(S) MODEL(S) ADDITIONAL INFORMATION 2005 - 2009 Avalon 2007 - 2009 Camry VDS(s): BK46K 2008 - 2009 Highlander 2006 - 2009 RAV4 Engine(s): 2GR VDS(s): BK31V, BK32V, BK33V, BK34V, ZK31V, ZK32V, ZK33V, ZK34V, ZK35V 2007 - 2009 Sienna Introduction This service bulletin provides information regarding valve timing inspection and service guidelines for vehicles equipped with 2GR-FE engines. © 2008 Toyota Motor Sales, USA Page 1 of 5 T-SB-0291-08 September 11, 2008 Page 2 of 5 2GR-FE Valve Timing Procedure Introduction (Continued) Figure 1. 3 2 1 5 9 8 7 6 4 1 RH Bank Intake Camshaft Timing Gear 2 RH Bank Exhaust Camshaft Timing Gear 3 RH Bank No. 2 Timing Chain 4 Crankshaft 5 Idler Gear 6 Timing Chain 7 LH Bank No. 2 Timing Chain 8 LH Bank Exhaust Camshaft Timing Gear 9 LH Bank Intake Camshaft Timing Gear Warranty Information OP CODE DESCRIPTION TIME OFP T1 T2 N/A Not Applicable to Warranty © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 3 of 5 2GR-FE Valve Timing Procedure Inspection 1. Set the No. 1 cylinder to TDC/compression. A. Set the timing mark to 0 on the timing chain cover by rotating the crankshaft clockwise. B. Verify the timing marks on the camshaft timing gears are in general alignment with the timing marks of the camshaft bearing cap: TIMING MARK IDENTIFICATION CYLINDER BANK INTAKE GEAR MARK EXHAUST GEAR MARK RH Bank (Bank 1) Small Mark Single Line LH Bank (Bank 2) Large Mark Double Line HINT When the engine is correctly timed, the timing marks will NOT perfectly align. Figure 2. Figure 3. RH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 4. RH Bank Intake Camshaft Timing Gear 2 1 1 Bearing Cap Timing Mark 2 Gear Timing Mark © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 4 of 5 2GR-FE Valve Timing Procedure Inspection (Continued) Figure 5. LH Bank Intake Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 6. LH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark HINT If the timing marks appear vastly out of alignment, turn the crankshaft one revolution (360 ) clockwise and note the position of the timing marks. Component Removal Guidelines 1. If engine disassembly is required that involves removing the camshafts or timing gears, set the #1 cylinder to TDC compression, wipe away any oil, and mark the following items in relation to each other prior to disassembly: • Timing gears • Timing chain • Timing chain No. 2 NOTE This relationship MUST be maintained. The intake gear is timed in relation to the crankshaft via the timing chain; the exhaust gear is timed in relation to the intake gear via the No. 2 timing chain. © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 5 of 5 2GR-FE Valve Timing Procedure Component Removal Guidelines (Continued) 2. If NEW camshaft timing gears or the No. 2 timing chain are being installed, the two yellow links on the No. 2 timing chain can be used to ensure correct relationship between the intake timing gear and the exhaust timing gear. Figure 7. 1 1 Yellow Link A. Align the paint mark on the timing chain with the intake gear timing mark (to ensure the intake gear is correctly timed to the crankshaft). Figure 8. RH Bank and LH Bank 3 3 4 3 3 4 5 4 5 4 1 2 1 RH Bank 2 LH Bank 3 Yellow Link 4 Gear Timing Mark 5 Timing Chain Paint Mark B. Align the two yellow links on the No. 2 timing chain to the timing marks on

I can't remember if the j21 has a single or twin cams, but here is a solution if you haven't taken the old timing chain off yet.
Take off the timing cover and the camshaft cover. Remove all spark plugs. Place a wire (welding rod or a piece of an old wire coat hanger) into the n;umber one plug hole - this is the plug for no. 1 cylinder, the cylinder nearest the radiator.
Turn the engine until the exhaust valve just closes and the intake valve just opens. This is referred to as the valves "rocking". At this point the wire should be right at the top of the piston stroke, and the number one piston is timed to take in gas on the down stroke, that is, the intake stroke.
At this point you should see the timing marks on the timing gears and their relationship to one another. The marks are either dots on the gear teeth, or marks on the camshaft which line up with marks on the cylinder head. These marks line up when the crankshaft is at top dead center, which is the position you turned the crank to while feeling the position of the piston with the wire.
I wish you well, good luck.

place no 1 piston at TDC compression stroke. There are procedures for the timing of the balance shafts but if it is only the timing chain I will go to that
Align uniquely coloured chain link with intake camshaft sprocket timing mark-- INT--. ( this will be pointing at the 2 o'clock position)
install timing chain and sprocket as an assembly
align first matching coloured chain link crankshaft timing mark (5 o'clock position)
align the second matching coloured chain link with exhaust cam shaft timing mark--EXH ( at the 11 o'clock position
There is a special procedure to reset the balance tensioner and it is different to the timing chain procedure.

To reset cam shaft timing chain tensioner push piston fully and turn clockwise until locked
Once the tensioner has been compressed ensure the distance from end to end is 2.83 inches . If not repeat the resetting process
vehicles 30.000 miles the tensioner is released when the engine is first started . In vehicles over 30.000 miles manually release tensioner by tapping the plunger
Note cam shaft and crank shaft sprockets bolts MUST only be used once. If you want details on the balancer chain procedure then make a comment in the box
use tension wrench and a degree gauge
cam bolts are tensioned to 63 ft lbs + 30 degrees
crank shaft pulley is tensioned to 74 ft lbs + 75 degrees

please read all before starting not to bad to change did you check compression if your sure that's what it is its about 4hr job.start by putting #1 tdc intake side.note where vacuum hoses are can mark with gray or yellow perm marker remove breather all plug wires exhaust manifold then intake manifold remember what bolts in and whats nutted on.remove break booster cross vacuum hose and egr control valve on left rear of intake side remove vale cover ((you'll have to get something to hold tension on timing chain so not to let tentioner come out inside timing chain cover when removing came gear)) remove head bolts only in off order so not to put tension in one area. do not remove cam shaft bolts and do not turn cam shaft at all after timing gear is removed take off head and check piston walls for wear replace gasket and put back in GOOD LUCK

Yes be sure the number one piston is at TDC firing stroke or compresson stroke and line up the timing mark pointer is pointed at exactly zero. One more thing when aligning the camshaft sprocket or sprockets be sure that when you are rotating the sprocket for the cam it is rotating in the correct direction and also be sure you observe the intake valve for number one shutting as you bring the marks up to alignment points, the intake valve and the exhaust valve should be shut when the marks line up if not you could have the cam sprocket off 180 degrees, get it right the first time or you may damage a valve trying to start.

i just rebuilt my 22r you have to make sure the chain is set on the timing gears properly also when you put the distributer in you have to find tdc on the #1 cylinder on the compression stroke. the piston travels and the valves open and close after the exhaust valve opens and closes the intake valve will open as the piston travels down when it closes the piston will travel back up compresing the fuel when the dot on the crank lines up with the mark on the timing cover that is tdc top dead center on the compresion stroke. once you have that yoo slide in th distributor so as the rotor points at the number one contact on the cap

What the last person said with the additional comment that being even one tooth off can cause it to run bad or not start. I prefer making marks on the gears and chain or belt- whichever you have and transferring the marks by teeth counting to the new belt or chain- fool proof. Did you rotate either the camshaft or crankshaft with the timing chain removed? If your engine is not a zero interference engine than you may have damaged the internal parts. Even on some zero interference engines, you can damage the camshaft by rotating it backwards. Your timing is just plain off or you may have damaged the engine. Sorry, don't know if your is a zero interference or not- I think most are not. I know my Miata is and my Eclipse was not. If it is not a zero interference engine and your marks are way off on your timing- just go ahead and save up at least the money for a new head and send it to mechanic. If it is a zero, and your marks look on- see if the interpretation of the mark could possibly be 1 tooth over on either the cam or crank. Make you go blind staring at it that intently and u can make mistakes.

i'am a little confused here. are you saying it jumped time and you took it apart and put new timmimg gear and chain in? and don't know if you got marks lined up right, between cam gear and crank gear?