1999 v70r engine options Topic is solved

fairmont50 · Post by **fairmont50** » 13 Jan 2016, 18:08

The t8 engine did not work out as well as hoped. It appears that it was stored outside for awhile and the valves in cylinders 3 and 5 are stuck open (probably due to rust). I have purchased a 2.4 t3 engine and will be putting my exhaust and turbo on it to get the car running again. Again, any advice would be appreciated.

Chris

Post by **precopster** » 14 Jan 2016, 00:16

If you have a previous hi po engine you're going to have an even higher performance engine if you move to a 2.4T and retain the turbo, injectors and tune from the previous engine.

The 2.4T engines have higher compression (usually a jump from 8.5 to 1 to 9 to 1 so beware of increased stress on the engine if running all the original hardware.

My T5 with a 2.4T just blew the head gasket for no reason other than I fanged it afew times. Putting a new head gasket on a higher compression engine will give you some peace of mind.

fairmont50 · Post by **fairmont50** » 12 Mar 2016, 21:40

I like to update my threads with the resolution:

I changed the engine to the 2.4 using the turbo and injectors from the t8 engine. It runs fine with no codes being set so far. I removed the engine from the top, this is a a PITA but I do not think that removing the trans with it from the top would be any better. The ideal solution would be to remove the whole damn thing with the cradle from the bottom the same way the factory installed it but you would need a lift.

The problem with the original engine turned out to be a broken exhaust valve in cylinder 1. There was about .250" missing from the head of one of the exhaust valves. Not sure why cylinder 2 had bad compression as well but it may have been a valve issue as well, the head gasket looked good. The exhaust valves on all of the cylinders looked a bit rough. The engine still had the cross hatch pattern visible on every cylinder and no ridge at all. This is amazing for a turbocharged engine with nearly 300k miles on it. As mentioned above it has had a crack in the block that has been seeping coolant for several years (about a pint between oil changes).

derekpagel302 · Post by **derekpagel302** » 14 Feb 2022, 21:28

So with the compression check being scattered, how much should the compression value per cylinder even come out to. At least a range for a healthy motor. Thank you

Post by **abscate** » 15 Feb 2022, 04:38

derekpagel302 wrote: 14 Feb 2022, 21:28 So with the compression check being scattered, how much should the compression value per cylinder even come out to. At least a range for a healthy motor. Thank you

Volvo gives both minimum values and variation per cylinder in specifications. I will find and post