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Posted on Nov 19, 2010

Rebuilt the block and head on my 97 2.0 dohc eclipse gs non turbo but the intake valve hits piston when i turn the crank for timing test

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  • Posted on Nov 19, 2010
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Joined: Nov 19, 2010
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Did you forget about the piston rings or the bearings

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1helpful
3answers

1990 Honda prelude 2.0 4 cylinder is my engine interference

"All Honda engines are Interference except 3.0L & 3.2 which are Non-Interference."( but does not cover year 1990,) so is lie. (all means modern, not 1990)
not told which 2.0L is there VIN or country.
the names of gen3 car engines is here.
IN USA (are you) we had the SOHC and DOHC engines. both,(options)
they year some are.
in Gas world, DOHC are mostly interference.
there exceptions


B20A/B20A1 - 2.0L DOHC PGM-FI 160/143 PS (Japan/Europe)
B20A3 - 2.0L SOHC 12v carb 104 hp North America


B20A4 - 2.0L SOHC 12v carb 114 PS (84 kW)Global, except North America
B20A5 - 2.0L DOHC PGM-FI 135 hp (101 kW) North America (interference engine)
B20A6 - 2.0L DOHC PGM-FI 142 PS (104 kW) Oceania
B20A7 - 2.0L DOHC PGM-FI 150 PS (110 kW) Europe, New Zealand
B20A8 - 2.0L DOHC PGM-FI 133 PS (98 kW) Europe
B20A9 - 2.0L DOHC PGM-FI 140 PS (103 kW) Europe
B21A - 2.1L DOHC PGM-FI 145 PS (107 kW) Japan (SI States)
B21A1 - 2.1L DOHC PGM-FI 140 hp (104 kW) North America

the truth is,
we put on a new belt and do leak down test.
if fails look for bent valves.
NO belt there test.
or super brave and by HAND only
put crank and TDC mark 0 zero. at damper pulley edge scale
turn the cam cog wheel (cam) by hand, with socket wrench feel of valves hit. ( all interference engines will)
VVT on newer car is more complex answer but not here.
there is always luck.
belt slips a bit , retardds the cam and stalls before it hits. luck happens, like walking a cross a city street blind folded, I say why even ask, just do it.
most DOHC engines with 10:1 compression ratio are interference, but if is the turbo version those are not.
mostly, (vast engines types exist, and nobody knows that it seems)

if you watch a 4cycle engine simulator
see how the piston chases the exhaust valve closed
the piston wins, on some engines it bends it.
some engines with notched piston tops are free running engine.
also honda's this old had the B20B swap put in.
only you can read engine serials. b20b is interference.
Do I have to say do not crank any engine for sure on any DOHC if the belt fails.(slips or snaps)
do a leak down test. not cranking,
my mazda mx5 had 1.8 Liter, free running, engine
but was turbo version but no turbo fitted new.
had low natural compression . see?
One guy had DOHC engine and the PO wrecked the DOHC head and put on the SOHC head. (FREE RUNS)
33 YEARS OLD THINGS HAPPEN
1helpful
3answers

Spark to cylinder but appears to be dead new head does not run right

Was the same fault there before you changed the cylinder head? If so, that would point to piston problems on cylinder No4.

Are you able to do a compression test on the engine? If there's piston/ring trouble on the 4th cylinder that could cause a misfire because of poor compression.

The other thing that springs to mind is that there's something amiss with the valve clearances on cylinder No 4.

I'm not familiar with your car - does it have an overhead camshaft? Unfortunately when refitting an overhead camshaft after a rebuild, some owners have managed to bend a valve. This usually happens because the engine has been turned during disassembly/rebuild and the timing marks have not been aligned when refitting the camshaft.

This results in a valve in contact with a piston and when the camshaft is fitted and torqued down the valve becomes bent.

I think your problem may lie in either a bent valve or incorrect valve clearances.
1helpful
1answer

1998 eclipse 2.0l dohc, starts but no run, has fuel, new head/belt and spark

If it pops when trying to start then you have installed the timing belt incorrectly. When replacing the timing belt you the camshaft and the crankshaft have to be lined up correctly. If they are not then you will get the pop out of the exhaust and the intake when the spark plug fires and either the intake or exhaust valve or valves are open. If it is a high interference engine you will bend valves as they hit the top of the pistons because the valves are compressed and extending into the cylinder. I guarantee you your valve train is out of sync with the crankshaft.
1helpful
1answer

How do you set the timing on a 97 mitsubishi eclipse spyder gs 4cyl non turbo?

well, i was gonna give you a long answer, but this link to ehow. com does a better job, its about changing the timing belt, but it does tell you how to time the engine as well

http://www.ehow.com/how_7912138_1997-eclipse-timing-belt-installation.html
0helpful
1answer

I replaced the head timing belt and water pump on

HI: Well It Sounds Like The Timing Belt Was't Put On Correctly.And If your Not Getting ANY Compression,Good Chance that your Pistons and Intake And Exhaust Valves Hit eac Other BECAUSE it Was'nt Timed correctly. Run A Compression Test before you go any further..This should help you.Let me Know by Voting on my Assistance i have given you. Thanks WYOCWBOY
1helpful
1answer

What is the firing order for a 97 eclispe spyder

1997 Mitsubishi Eclipse Spyder GS-T FWD 2.0 liter DOHC Turbo L4

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1997 Mitsubishi Eclipse Spyder GS FWD 2.4 liter SOHC L4

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Hope help with this (rememmber rated this).
0helpful
1answer

The timing belt broke on my 95 eclipse gs how can i fix it??

I believe that you have what is called an 'interference engine', that means that if the timing belt breaks, the valves hit the pistons, and basically, the engine is junk at that point, as it would cost more to attempt to fix than to purchase a used or rebuilt engine.
0helpful
1answer

Coil not firing on 2 cly

Not sure what size of motor you have so please choose what you need:

1999 Mitsubishi Eclipse GS
2.0 liter DOHC L4

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1999 Mitsubishi Eclipse GS-T
2.0 liter DOHC Turbo L4


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1999 Mitsubishi Eclipse GSX (AWD)
2.0 liter DOHC L4

8a697b1.gif
1helpful
1answer

Motor swap

If your planing on swaping the 2.0 non-turbo(420a) to the 2.0 turbo(4g63t) your problem will be that the motor and transmission are on opposite side of one another. My GST has the trans on the passenger side and the motor on the driver. The 420a is just the opposite. If your serious about it you should get the motor rebuilt with higher performance crank, pistons, rods, exc.  And they make turbo kits for the 420a.  But you'll need better fuel delivery and some mild tuning.
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