Turbo engine limits

For those of you not faint of heart, who believe the Volvo 480 should have more torque and horsepower, find all you need to know in here.

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doingitsideways
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Turbo engine limits

Post by doingitsideways » Wed Oct 08, 2014 8:33 pm

So, I'm toying with building a bit of a monster Turbo lump. Well, as much as possible without breaking the bank anyway.

I was wandering if anyone knows the sort of power that the internals can take. Rods, crank, head/studs etc?

Current plan is to port/pollish the head, T25g turbo, bigger injectors - thinking from a B230t, decent exhaust, then go from there.

Any thoughts appreciated :)

Cheers,

Steve :hopping:
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

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jamesy12345
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Re: Turbo engine limits

Post by jamesy12345 » Wed Oct 08, 2014 8:45 pm

well Robou's ECUs get them up to 170 /180 on standard internals, Rpruen did lots of work to get to near 300 IIRC...so I think the answer must be somewhere in between the two!!

Not much help I know

Give me a shout if & when u want this T25G

Regards,
The Swap Shop Assistant
Current:
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84

Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R

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doingitsideways
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Re: Turbo engine limits

Post by doingitsideways » Wed Oct 08, 2014 9:01 pm

Dear Swap-Shop Assistant,

I would indeed be interested in your T25g.

Would you be willing to do a deal, with the obligatary packet of Monster Munch and half eaten Crunchie?

Many thanks,

Steve "home of Jamesy's previous projects" Sideways :wall:
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

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glasgowjim
480 Is my middle name
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Re: Turbo engine limits

Post by glasgowjim » Wed Oct 08, 2014 9:02 pm

Can supply a set of 4 bigger injectors (or so I was told at the time just never used them)

can I have the monster munch pleeeese :lol:

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doingitsideways
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Re: Turbo engine limits

Post by doingitsideways » Wed Oct 08, 2014 9:05 pm

A savoury man then, Jim??

Any preference on flavour?

Worth bearing in mind though, that roast beef will require the injectors cleaning! :nuts:
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

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jamesy12345
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Re: Turbo engine limits

Post by jamesy12345 » Thu Oct 09, 2014 8:06 am

a deal eh? Got to be worth a couple of those Ronals at least :)
Current:
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84

Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R

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doingitsideways
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Location: Manchester

Re: Turbo engine limits

Post by doingitsideways » Thu Oct 09, 2014 10:03 am

jamesy12345 wrote:a deal eh? Got to be worth a couple of those Ronals at least :)
2 Ronals, 1 a little scuffed.
No tyres. :D
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

Robou
Knows an Aerodeck isn't a 480
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Re: Turbo engine limits

Post by Robou » Thu Oct 09, 2014 9:28 pm

There is no answer in between. Richard Pruen invested a lot and blew up everything in the end. Everybody did. Buy or build yourself a car that answers your demands.
Injection is a timed pulse. Bigger injectors let pass more fuel. Your lambda sonde does it's utmost best to correct this until about 3200 rpm. Then the engine runs with too rich a mixture. Fun!
The original turbo speeds up very fast. It is made for (only?) 1 bar maximum. If you mount a "bigger" turbo a lag will occur and the higher boost will not be answered for by the ECU, because the MAP only translates to 1 bar. So the mapping goes haywire. Fun!
The solution is a two years study in electronics and Megasquirt and doing away with the ECUs and MAF, because no one will assist you in rebuilding/adjusting the original ones. Even the super-richmod (or what it is called) died premature.
The oracle has spoken once again. At your service. I admire your fantasy.
Too old to bother
480 Turbo midst '91

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doingitsideways
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Re: Turbo engine limits

Post by doingitsideways » Thu Oct 09, 2014 11:15 pm

Ha ha ha!

Thanks Robou, the Oracle! ;)

So, have you any advice?

I think I would really be happy with 200-220bhp. That would make a really lively little car.

Tell me straight, am I dreaming to even get anywhere near that without epic problems??

Many thanks,

Steve :hopping:
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

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jamesy12345
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Re: Turbo engine limits

Post by jamesy12345 » Fri Oct 10, 2014 6:40 am

T4 engine? :D
Current:
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84

Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R

User avatar
doingitsideways
480 Expert
Posts: 659
Joined: Wed May 02, 2012 8:55 pm
Location: Manchester

Re: Turbo engine limits

Post by doingitsideways » Fri Oct 10, 2014 7:22 am

jamesy12345 wrote:T4 engine? :D
Hmm...

I'll wait for a project thread! ;)
"If you can't fix it with a hammer, it's an electrical fault!"
Hammers can't fix a 480!!!

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