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# Is it possible to put 98 T5 engine into 00 (Bastards) V70?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

RickHaleParker
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precopster wrote:
Wed Apr 24, 2019 2:18 am
A 1999 NA is a B5254S not a B5244S nonetheless it's doable.
OP's recipient car is an 2000, B5244S.

The 1999 was a B5254S, same displacement as the B5244S.
I don’t have the stroke, bore and compression ratio for the B5254S.

Engine displacement is the swept volume of all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead centre (TDC) to bottom dead centre (BDC). Engine displacement does not include the total volume of the combustion chamber.

Compression ratio it is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke.
Engine Compression ratio = (Engine displacement + Total Combustion chamber volume)/ Combustion chamber volume.

B5234T3 Engine displacement = 2319cc. Compression ratio = 8.5:1 .

Compression ratio = (2319cc + X)/X = 8.5

(2319+x)/x-(8.5)=0 :Move all the terms to the left.
(x+2319)/x-(8.5)=0 ;add all the numbers together, and all the variables.
(x+2319)/x-8.5=0 ;add all the numbers together, and all the variables
(x+2319)-(8.5)*x=0 ;multiply all the terms by the denominator.
(x+2319)-8.5x=0 ;multiply parentheses
x-8.5x+2319=0 ;get rid of parentheses
-7.5x+2319=0 ;add all the numbers together, and all the variables
-7.5x=-2319 ;move all terms containing x to the left, all other terms to the right
x=-2319/-7.5 = x=309+1/5 = x=309+0.2= x=309.2cc

Check:
(2319+309.2)/309.2 = 2628.2/309.2 = 8.494/1 = 8.5:1.

Total Combustion chamber volume for the B5234T3 = 309.2 cc.

Using the same math as above:

B5244S
Engine displacement = 2435 cc
Compression ratio = 10.3:1
Total Combustion chamber volume = 260.538 cc

Compression ratio = (2319 + 260.538)/260.538 = 9.900 = 9.9:1.

PS: Found the compression ratio for the B5254S, 10.5 : 1 . Cylinder diameter is 83 mm.

Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
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1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

jjss70
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I have a 95 motor in a 99 s70, both of them are turbo and I think I need to put the 99 head on the 95 motor . is that doable?