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Rebuilding 1991 hyundia s coupe engine

I am trying to find out what are the standard bore measurments for a G4DJ engine?

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How to measure ring gap to bore, if it is taper or not im a going to oversize or standard


i think you left out the word NOT? above.
I'm not boring the cylinders, right>? key word NOT.
if not tapered the gaps are spec,.
if bored , the same.
if not bored, the answer is below. in all cases.

that is easy, the bottom of the cylinder is not tapered.
you measure and set ring gap there (BTC), and it is set (ground) right there..
and then move it to the top and see it go larger ?.that gap. it sure will.
or do the math and add the taper measured amount to the gap spec. (using equation, Pi x D. = circumstance) (D = tapered max diameter)
what you don't want is , to have the gap hit zero as the piston
goes to BDC.

so say the taper is .005"
so circum is .016 wider, add that to spec gap.
then slide ring to BTC see gap go to, spec.

Pi = ? = 3.14"

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1 Answer

How can I turn my engine management light on hyundia coupe 2 liter se


Unplug a sensor and start car mass air flow is a good one.

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1 Answer

What is the 289 windsor piston to bore clearance


the clearance is .0015" with a feeler strip between the piston skirt and the cylinder. The ring gap will be around .010" measured at the bottom of the bore. Industry standard is .003" per 1" of bore

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1 Answer

Standard bore size mm


ENGINE 2 stroke single cylinder direct reed valve crankcase induction Liquid cooled 125 cc engine Cylinder size 124 8 cc Bore and stroke 54 x 54 5 mm 200 cc engine Cylinder size 175 3 cc Bore and stroke 64 x 54 5 mm 250 cc engine Cylinder size 247 7 cc Bore and stroke 72 5 x 60 mm 280 cc engine Cylinder size 272 2 cc Bore and stroke 76 x 60 mm 300 cc engine Cylinder size 294 1 cc Bore and stroke 79 x 60 mm I Cant put periods or commas so bare with me

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1 Answer

How do i start to rebuild my 1996 dodge engine 5.2 liter


First thing is to tear it down and make sure you mark what pistons went in what cylinders. Then you will need to take precise measurments of the cylinders, looking for "out of round' and taper. This involves the use of micrometers. If the cylinders are within wear limits then you can just install new rings and hone the cylinder walls. If they are not then the block and all the pistons need to go to the machine shop for "boring out" the cylinders and pressing on new pistons. The crankshaft will also need to be measured at the bearing surfaces. If they are within wear limits then the crank can be polished and reused, if not then it has to be replaced. All cylinder head work needs to be done by a machine shop.

After all the measurments have been taken, the right size rings, and bearings can be ordered. Rebuilding an engine is not a task that should be done by a novice.

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1 Answer

What is the piston diameter of the 3.1 v6 in a 1991 pontiac sunbird?


Cylinder bore---Standard Bore is 3.5046 in to 3.5053 in --------maximum taper .0005 --------maximum out of round .0005 in .........HOPE THIS HELPS

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1 Answer

Pisont ring sizes and bearings


they should be the same as factory if you haven't bored the engine but you could measure them and see

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