5 Cylinder n/a RWD Project.

Squares · May 24th, 2011, 12:17

Hi All, this is my first thread so be gentle.

Like a lot of you I expect, I have long loved the sound of a 5pot engine, I suppose since back in the group B days, and the fact that these can now be found in dear old Volvo's for not much money, is screeming at me for my next project.

After a couple of years "out" from cars the last of which was a decent power turbo track machine, I am keen to build something special again, this time naturally aspirated.

So, my vauge plans/part requirements, which are still in the very early stages are:

Source a n/a 2.5 Volvo 5 cylinder engine
Find a suitable RWD gearbox
I will propbably leave the bottom end standard to save on costs, what do these rev to as standard?
Fit the head with larger valves, gas flow and find some suitable cams
custom exhaust and engine mounts (easy)
Throttle Boddies if the budget allows
Stand Alone engine managment
A suitable rwd car......sadly probably not a volvo (sorry).

I have an aim of 200bhp/tonne as a minimum, so approx 1200kg car would require 250bhp to make 211bhp/tonne. This should be fast enough to have fun and drive on or near its limit on a quite road or track, without needing to do over 150mph to stretch it's legs.

So that is it really, any tips, hints or help would be great, aswell as links to relevant parts, cars or ideas would be fantastic. I have read Austen's thread with interest, however this will be a much lower budget build, whilst still I hope being very tidy and properly throught out. Hopefully I can have 80% of the fun, for 20% of the cost....

PS The shortlist cars so far is: Mk2 escort (prob too expensive), an MGB/MGC GT, a Merc 190, BMW compact or my current favorite, a Mazda Rx7 FD3.

Squares · May 24th, 2011, 12:51

This seems to be the highest output standard n/a engine I can find in a Volvo:

2.4 20v B5254
2.4L 2435cc I5
20v No
Bosch LH 3.2 Jetronic*
170 hp (125 kW)@6200 rpm 220 N·m @3300 rpm
M56 5 speed manual/ 4 speed adaptive automatic
0–100 km/h: 9.2s, VMax: 216 km/h(134 mph)

tc · May 24th, 2011, 16:33

Will be selling the engine out of my 2.5 960 soon hopefully (in the next few weeks),it's done 122k runs as sweet as a nut, pm me if your interested.

....edit.... Just realized you want a five pot not a six... Doh!

davebslater(uk) · May 24th, 2011, 18:05

stick it in a kit car.......

May 24th, 2011, 12:17	#1
Squares New Member Last Online: May 25th, 2011 11:20 Join Date: May 2011 Location: Bucks	5 Cylinder n/a RWD Project. Hi All, this is my first thread so be gentle. Like a lot of you I expect, I have long loved the sound of a 5pot engine, I suppose since back in the group B days, and the fact that these can now be found in dear old Volvo's for not much money, is screeming at me for my next project. After a couple of years "out" from cars the last of which was a decent power turbo track machine, I am keen to build something special again, this time naturally aspirated. So, my vauge plans/part requirements, which are still in the very early stages are: Source a n/a 2.5 Volvo 5 cylinder engine Find a suitable RWD gearbox I will propbably leave the bottom end standard to save on costs, what do these rev to as standard? Fit the head with larger valves, gas flow and find some suitable cams custom exhaust and engine mounts (easy) Throttle Boddies if the budget allows Stand Alone engine managment A suitable rwd car......sadly probably not a volvo (sorry). I have an aim of 200bhp/tonne as a minimum, so approx 1200kg car would require 250bhp to make 211bhp/tonne. This should be fast enough to have fun and drive on or near its limit on a quite road or track, without needing to do over 150mph to stretch it's legs. So that is it really, any tips, hints or help would be great, aswell as links to relevant parts, cars or ideas would be fantastic. I have read Austen's thread with interest, however this will be a much lower budget build, whilst still I hope being very tidy and properly throught out. Hopefully I can have 80% of the fun, for 20% of the cost.... PS The shortlist cars so far is: Mk2 escort (prob too expensive), an MGB/MGC GT, a Merc 190, BMW compact or my current favorite, a Mazda Rx7 FD3.

May 24th, 2011, 18:05	#4
davebslater(uk) redbollock guru Last Online: Jun 30th, 2016 23:54 Join Date: Jan 1970 Location: lincoln	stick it in a kit car....... __________________ www.dbsmotorsport.co.uk

May 24th, 2011, 12:51	#2
Squares New Member Last Online: May 25th, 2011 11:20 Join Date: May 2011 Location: Bucks	This seems to be the highest output standard n/a engine I can find in a Volvo: 2.4 20v B5254 2.4L 2435cc I5 20v No Bosch LH 3.2 Jetronic* 170 hp (125 kW)@6200 rpm 220 N·m @3300 rpm M56 5 speed manual/ 4 speed adaptive automatic 0–100 km/h: 9.2s, VMax: 216 km/h(134 mph)

May 24th, 2011, 16:33	#3
tc VOC Member Last Online: Jan 5th, 2024 15:51 Join Date: Dec 2004 Location: Chorley View Photos By: tc	Will be selling the engine out of my 2.5 960 soon hopefully (in the next few weeks),it's done 122k runs as sweet as a nut, pm me if your interested. ....edit.... Just realized you want a five pot not a six... Doh!

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