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Engine swap from S40 T4 to V70

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Old Aug 21st, 2018, 09:45   #1
dtm
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Default Engine swap from S40 T4 to V70

Hello all,

I'm wondering if an engine swap from a 2000 S40 to a 1999 V70 is direct bolt on, or if there are many mods needed?

Since the V70 also has 4 cylinder engines, that where used in the S40, cloud they just bolt straight in?

I'm prepared to use the wiring (if needed) from the S40 in the V70, also the key/ignition barrel, or is that not a requirement?

Help on this would be appreciated.

Regards from Portugal,
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Old Aug 21st, 2018, 11:53   #2
SteveSarre
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Hi

I don't know anything about V40s.

The V70s have 5 cylinder engines.

I would think the whole engine management system (fuel injection and various sensors) would be so different that it would be impossible.

Why do you want to do that? If your V70 engine is broken, then it would probably be much easier and cheaper to find a used V70 engine.

Steve
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Old Aug 21st, 2018, 12:01   #3
dtm
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Aren't the 2 liter 180hp engines 4 cylinder?

I have a complete S40 t4 car, that's why.

Having all the parts and an engine I know the history of, I thought it would be better than a parts engine.

I don't, yet own, a V70
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Old Aug 21st, 2018, 12:33   #4
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Quote:
Originally Posted by dtm View Post
Aren't the 2 liter 180hp engines 4 cylinder?

I have a complete S40 t4 car, that's why.

Having all the parts and an engine I know the history of, I thought it would be better than a parts engine.

I don't, yet own, a V70
No, they are five pot e..g. 1984cc is a 5cyl engine at are all the others in the S60/V70/C70 range
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Last edited by ASt85; Aug 21st, 2018 at 14:56. Reason: additional info
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Old Aug 21st, 2018, 13:13   #5
Joseph Martin
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S40/V40 are 4 cylinder.

S70/V70/C70 et al are all 5 cylinder.

Yes they are all derived from the modular whiteblock design.

But, would a swap be possible? I don’t know.

However, all the ancillaries will be different, S/V40s for a start are cable throttle, later V70s are fly by wire. I think you’d be in for a bigger headache than it would be worth if I’m honest.
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Old Aug 21st, 2018, 14:59   #6
ASt85
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Quote:
Originally Posted by Joseph Martin View Post
S40/V40 are 4 cylinder.

S70/V70/C70 et al are all 5 cylinder.

Yes they are all derived from the modular whiteblock design.

But, would a swap be possible? I don’t know.

However, all the ancillaries will be different, S/V40s for a start are cable throttle, later V70s are fly by wire. I think you’d be in for a bigger headache than it would be worth if I’m honest.
Absolutely agree - a friend/neighbour did this a few years ago, he had to swap the donor ecu as well as the engine - followed by a software update/rewrite.
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Old Aug 21st, 2018, 22:08   #7
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Owning both a V40 and C70, I can confirm that although the V40 4 pot engine is basically a shortened 5 pot, everything about the engine bay is different. Ancillaries, engine mounts, exhausts, power steering etc. By the time you have modified everything and then sorted the electrical side it would be a mammoth task and better to sell what you have and start again with a complete V70.
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Old Aug 23rd, 2018, 09:59   #8
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OK,

I went to check out the V70, and although it's been parked outside for almost 2 years it doesn't look to bad.

Talking with the mechanic that used to service it, it told me the problems started when the owner blew the oil cooler. After that it started mixing oil and water in the expansion tank until it over heated when they where going from Lisbon to Portimão.

It got towed to the garage and moved under it's own power to the place where it seats now.

My plan will be to strip the head and see if it's bent or not, and, depending on price, fix the head or strip the rest of the car for parts.

I can get the car for about 350€ or 315£.
Is this a good plane? Or should I just get a replacement head?

Chears
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Old Aug 23rd, 2018, 11:52   #9
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Quote:
Originally Posted by dtm View Post

My plan will be to strip the head and see if it's bent or not, and, depending on price, fix the head or strip the rest of the car for parts.

I can get the car for about 350€ or 315£.
Is this a good plane? Or should I just get a replacement head?

Chears
Is it worth doing? You need to get the head off to find out exactly what is wrong - if the head is warped then it will depend on the cost of a replacement in Portugal - are they available from a breaker? A new one will cost you more than the car is worth!

If the car hasn't run for two years and the cylinders have been water damaged, remove the plugs put 100ml or so of engine oil into each bore via the plug hole, leave the plugs out and check if the engine can still be turned over by hand using a breaker bar on the main shaft bolt as the pistons and cylinders may have corroded.

If it does turn over even though the cylinder head gasket is probably blown I would flush the system completely using a low pressure hose to get rid of any muck before I removed the head - others may disagree but there is no point in replacing the head gasket and then flushing as there may be also sorts in the water. Flush the head on its own when you have it off the block. When you refit the head re-flush the engine before you attempt to start it.

Check to may sure there is no water in the oil system or the automatic transmission fluid as when the "oil cooler" which is the heater exchanger for the automatic transmission cooler, blows it can draw water back into the "oil" either lubricating or automatic transmission system as it cools.

However, at around 350€ for the car, you would have more than that in parts value - eg 4 X mag-alloy wheels = 150-200€ depending upon rim damage etc.,
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Last edited by ASt85; Aug 23rd, 2018 at 12:02.
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Old Aug 24th, 2018, 08:53   #10
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"Is it worth doing? You need to get the head off to find out exactly what is wrong - if the head is warped then it will depend on the cost of a replacement in Portugal - are they available from a breaker? A new one will cost you more than the car is worth!"

To resurface the head is about 30€, pressure test is another 35€, each valve 2.5€ and each valve seat (don't really know how it's called in English) is 3€.

"If it does turn over even though the cylinder head gasket is probably blown I would flush the system completely using a low pressure hose to get rid of any muck before I removed the head"

How would you go about doing that. Low pressure water hose? In the cooling system?

"Check to may sure there is no water in the oil system or the automatic transmission fluid as when the "oil cooler" which is the heater exchanger for the automatic transmission cooler, blows it can draw water back into the "oil" either lubricating or automatic transmission system as it cools. "

Manual transmission, so that's not an issue.

"However, at around 350€ for the car, you would have more than that in parts value - eg 4 X mag-alloy wheels = 150-200€ depending upon rim damage etc.,"

Turbo and wheels should pay for the car, for sure, the question how long will it take to sell parts.

Thanks for all your answers.
I'm going to talk to the seller and make the deal. I'll keep you all posted.

Chears
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