Sr20ve rebuilt, overhaul

[brokenjars]

Hi guys,

My car engine is having high engine oil lost, around 1 litres for 1500km. When stationary revving can see smoke come out from tailpipe (4-5k rpm). No smoke come out during normal startup every morning. Engine sounds normal. Compression in all cylinders are 155, 150, 155, 150. Leakdown test shows no leakage. Engine sounds normal no tak tak tak sound. Recent dyno shows 160whp (factory rated 204hp). Engine history unknown as i just bought this car.
I suspect maybe the third piston ring (the one that swips down the engine oil) is worn...or jam? Do i need to do an overhaul? If yes, how much usually? Budget 3k enough?

Engine : sr20ve 20v neo vvl
Engine oil used : shell fs 5w40

 

[Izso]

sounds like worn valve seats or piston ring already. Time for an overhaul. Price depends on what it is you want to do but I think 3k might be just enough. Depends on mechanic

 

[ixeo]

Nice engine.
Needs a rebuilt.

 

[brokenjars]

sounds like worn valve seats or piston ring already. Time for an overhaul. Price depends on what it is you want to do but I think 3k might be just enough. Depends on mechanic

I was thinking, just change all the gaskets and seals and change the piston rings and bottom end bearing. No rebore and reuse pistons. If that is possible...how much would this usually costs?

 

[vr2turbo]

I was thinking, just change all the gaskets and seals and change the piston rings and bottom end bearing. No rebore and reuse pistons. If that is possible...how much would this usually costs?

Then need to open up and inspect the cylinder wall. If still okay, then ring change will do, but if cylinder wall not good, then need rebore......

 

[sweelt]

Then need to open up and inspect the cylinder wall. If still okay, then ring change will do, but if cylinder wall not good, then need rebore......

rebore ? ...naise , hahaha

 

[vr2turbo]

rebore ? ...naise , hahaha

Rebore is nice, extra moolah also......

 

[Izso]

I was thinking, just change all the gaskets and seals and change the piston rings and bottom end bearing. No rebore and reuse pistons. If that is possible...how much would this usually costs?

cost is subjective and heavily dependent on your mech. Best you ask mechs for quotations.

And yes - what you're talking about is a normal overhaul. Rebore and changing pistons usually is done only when needed and if needed, you have serious issues

 

[brokenjars]

I went to consult a mechanic to get some advice. He told me most probably my pistons rings are worn, but might not need to rebore and change the pistons. Anyway he asked for 2 days for him to search for all the parts availability such as pistons and rings before he can began overhauling me engine. Anyone got a sr20ve overhauling experience? If he can't find the parts, I might need to source it myself.

 

[Izso]

I went to consult a mechanic to get some advice. He told me most probably my pistons rings are worn, but might not need to rebore and change the pistons. Anyway he asked for 2 days for him to search for all the parts availability such as pistons and rings before he can began overhauling me engine. Anyone got a sr20ve overhauling experience? If he can't find the parts, I might need to source it myself.

Does he have experience overhauling a SR20? Perhaps you need to seek a second opinion or a specialist.

 

[vr2turbo]

I went to consult a mechanic to get some advice. He told me most probably my pistons rings are worn, but might not need to rebore and change the pistons. Anyway he asked for 2 days for him to search for all the parts availability such as pistons and rings before he can began overhauling me engine. Anyone got a sr20ve overhauling experience? If he can't find the parts, I might need to source it myself.

He did not open up, and say most probably worn and is not confirm look for parts already......lol

 

[alcyon]

whp and bhp is different ok. I would say the power loss through gb and wheels seems just about right.

 

[brokenjars]

Does he have experience overhauling a SR20? Perhaps you need to seek a second opinion or a specialist.

He just give me a rough assumption based on the symptoms, and he did say he needs to open up the engine before he can confirm and quote the price.

The reason he needs to find all parts availability first is to make sure all parts are available to him if he needs to order it. Or not after he open, but he cant get parts then my car will open for nothing lol.

This fellow is an old experienced fiat specialist. Can see many fiat car there, even the old ugly fiat multipla lol.
Reason i went there is because it is recommend by my friend.

 

[brokenjars]

whp and bhp is different ok. I would say the power loss through gb and wheels seems just about right.

The 160hp is whp i think. Dyno from dynojet machine. And my engine compression should be above 200 for all cylinders..

 

[alcyon]

The 160hp is whp i think. Dyno from dynojet machine. And my engine compression should be above 200 for all cylinders..

Exactly what i meant, you said the quoted factory spec is 204hp. Normally factory quoted spec is not whp but bhp (at the flywheel).

 

[brokenjars]

Exactly what i meant, you said the quoted factory spec is 204hp. Normally factory quoted spec is not whp but bhp (at the flywheel).

Yeah i know. So minus 20% lost i should get around 16+ whp. But then my car is not stock anymore...so should get more ponies i think. Have a piggyback, fuel pump upgradeds and trottle body.

 

[^pomen_GTR^]

I went to consult a mechanic to get some advice. He told me most probably my pistons rings are worn, but might not need to rebore and change the pistons. Anyway he asked for 2 days for him to search for all the parts availability such as pistons and rings before he can began overhauling me engine. Anyone got a sr20ve overhauling experience? If he can't find the parts, I might need to source it myself.

most of the time the case is stuck piston ring.... which overhaul+remove piston and just replace new ring....no rebore and no piston replacement...

as for cost and other part like valve seal also need to do... this need to ask your local preferred mech to price quotation...