Hey everyone

Okay so first let me say, yes my 850 is a NON turbo.

Now that is settled. Okay, I was at pick n pull today screaming, cussing, farting and getting generally entirely too dirty trying to pull a turbo out of a 1996 Volvo 850 wagon. I stripped that thing down to turbo and exhaust manifold only, and I could not get it off for the life of me. So obviously my question is, how in the heck do you take off a turbo?????? I even checked a 240 and the set up was almost identical to the 850 (obviously a different engine, obviously a different spot, but you get the point).

Pictures would help a WHOLE bunch if you are able to reply with them.


Now, lets same I get the turbo off. Im gonna need all the hoses and what not, but can I install it on my non-turbster? I noticed some sort of heat shield thing over the turbo model that my car does not have, and the exhaust manifold was pretty different as well. Not to mention intercooler hose placement, intake placement etc etc etc. Just wondering if it is possible. The turbo would also be a nice trophy for my fireplace

For the record and what many have asked prior. Your better off buying a turbo car to begin with. Sell off the N/A and buy a turbo. otherwise you have to change out the wiring, different ecu, etc. Yeah you can get it to work but not worth all the time to do so. The N/A has a high compression to begin with at 10.5:1, and your exhaust valves would burn up pretty quick. To get the turbo off there are 4 nuts 2 on one side 2 on the bottom.

the +T has been done but its very time consuming and costs $$$$$$.

But a turbo motor swap is possible, it has been done before. You need everything under that hood... and a donor car or two is best..

Here is some reading on the topic.

http://www.matthewsvolvosite.com/for...pic.php?t=3457.

https://www.google.com/#q=volvo+850+turbo+removal

https://www.google.com/#q=volvo+850+...er+replacement

IMHO, I'd also recommend selling the NA and buying a turbo. Converting the NA to turbo can be done but it's more work than it's worth unless you just happen to run into a cheap turbo car for a donor and you have nothing better to do with your time.

I had a similar issue and succeeded in removing the turbo from a s60 AWD without taking off the front diff and therefore believe that this should be much easier from an 850. without a diff would have been as easy as pie to remove from below. What are the issues you are facing with removing the turbo?

All you need to do to take it off is remove the heat shield, which should be three 10mm bolts, remove the intake and intercooler piping attached to the turbo, remove three 17mm banjo bolts and two 5mm allen cap bolts holding the oil and coolant lines on, and unbolt the four flange bolts holding the turbo to the manifold. Then it should pop out. To get the manifold off, depending on the emissions systems equipped, you should have to pull some 14 bolts off, one of which is blocked by the egr tube on equipped cars. Now, to be completely honest, unless you build up the motor, you won't be able to run much boost. The 2.4l motors run 10.5:1 compression and the 2.3l turbos run only 8.5:1. Adding boost to an engine with a high compression ratio is asking for trouble. You could end up with one or more rods in your oil pan by the end of the day. You would also need a specially reprogrammed ECU in order to run it efficiently. You're talking about a large lump of cash to pull such a feat off without ruining the motor.

Please explain how the 2.5L engines achieve different compression ratios as the bore and strokes are consistent. I am referring to the s60 AWD which uses the low pressure turbo because of the higher compression engine. The T5 and R engines uses high pressure turbochargers and have lower compression ratios. I am keen to run the bigger turbocharger...to create an equivalent of the T5 engine. Does anyone know what these differences are, please?

The piston.
If it's domed, the shape and size of the dome. It might be flat with fly cut reliefs for the valves or it could be dished. If the piston wrist pin is raised or lowered on a custom piston that will also change CR.

With the same bore and stroke and identical heads the piston will be the factor determining compression ratio.

thanks for the reply. My follow up question to this is would the B5452T2 engine ( s60AWD with the low pressure turbo and higher compression ratio) handle a larger turbo to handle the increased pressure? What other mods might heed to be included besides changing the pistons and possibly the conrods? How different are the cylinder blocks?

The connecting rods are always a good thing to upgrade. If you're going to a 19 it's recommended. If you're going bigger than 19 you have to or you'll end up having to AND repairing the damage from a bent rod or two.

I think you should try your question over on Volvospeed as they do a lot more with performance engine building.