This man works for volvo on the engine development department and has a vast amount of knowledge. The good thing is that it puts some of that knowledge on the internet: http://www.wothrline.com/main.html
This man works for volvo on the engine development department and has a vast amount of knowledge. The good thing is that it puts some of that knowledge on the internet: http://www.wothrline.com/main.html
... But what on earth are "roof cunnings"? - it all sounds very rude to me
Actually I beg to differ, He obviously he is very passionate and spends a lot of money on his car but I belive he has been feed a fair amount of Cack.
As Ive seen much more favorable results without doing a lot of that stuff!
Last edited by lance; Thursday 13th July 2006 at 11:10.
2004 V50 T5 SE
Lance, indeed if you read the first page you will see that this site is all about his own findings and that anyone is entitled to disagree. To quote his last sentence -
"I will NOT debate the information from this site on any Internet forum. This is my personal experiences and if someone doesn't agree it's their right not to do so."
Adam.
Last edited by volvotuning; Thursday 13th July 2006 at 11:19.
I do like his car though oh i am so in love need to spend a bit of cash to get mine in this condition
SIGNATURE COURTESY OF STORM TROLL
Originally Posted by T5ER
Yeah it does look the part, Mine also needs a make over too, Front tyres , suspenders, rear discs & pads, front pads atleast, also chav dint taking out rear passanger door , and bleedin car park scrape out of back panal. Having new AC pipe next week so atleast I can be chilled about it all!
2004 V50 T5 SE
In my opion the guy nows more about this stuff than most of us. Take for instance his opion on injectors. I know for sure that there will be a lot of experts here who will disagree but after carefull reading I agree with him:
"Fuel injectors
Too many people and tuning companies seams to forget that the engine need fuel in order to perform and if you don’t upgrade your car with bigger injectors above a certain level of tuning, the power will simply not be there. Too choose fuel injectors is not so difficult as long as you keep in mind that there has to be margins for component protection so that the injector is not run wide open. There are exact formulas to calculate size of fuel injectors, but bellow are some guide lines concerning the most common fuel injectors used in B52x4Tx engines. We know that maximum performance is obtained at lambda between 0.91 and 0.93, but it’s often a delicate task to keep lambda at optimum air/fuel ratio for a longer period due to heat in exhaust system and internally in the cylinder. In real life this often means that after a period of time the system will have to engage component protection and run with a richer air/fuel ratio in order to cool the hardware and then lambda 0.83-0.85 is what I regard as a good compromise for performance and safety as long as temperatures are within the limits. Maximum component protection may demand as rich as lambda 0.7 or richer and that you will have to bear in mind when choosing fuel injectors. Make sure that your injector size can handle lambda 0.7 at desired power output. Lambda 1 is equal to A/F ratio 14:1.
Volvo fuel injectors Lambda value (A/F) Power
468cc (349gr/min) 1 468hp
0.92 430hp
0.85 398hp
0.8 374hp
0.7 328hp
394cc (294gr/min) 1 394hp
0.92 362hp
0.85 335hp
0.8 315hp
0.7 276hp
350cc (261gr/min) 1 350hp
0.92 322hp
0.85 298hp
0.8 280hp
0.7 245hp
315cc (235gr/min) 1 315hp
0.92 290hp
0.85 268hp
0.8 252hp
0.7 221hp
310cc (231gr/min) 1 310hp
0.92 285hp
0.85 264hp
0.8 248hp
0.7 217hp
Example none stock fuel injectors
Fuel injectors Lambda value (A/F) Power
725cc (541gr/min) 1 725hp
0.92 667hp
0.85 617hp
0.8 580hp
0.7 508hp
550cc (410gr/min) 1 550hp
0.92 506hp
0.85 468hp
0.8 440hp
0.7 385hp
Knowing the size of the fuel injector let us determine what power output is reasonable to expect from the setup. If we calculate that our setup can hold the power output at lambda 0.85 without running to hot we can also see that many performance figures presented to us in media, on the Internet etc are quite hard to believe. There are no stock Volvo fuel injectors big enough for 500hp and even 400hp is hard to reach. Bigger injectors cost money and it’s also more difficult to control a big injector at low flow rates and therefore car manufacturers will not choose injectors that have capacity high above the expected need. Too big injectors can affect idle performance, emissions, cold start behaviour etc.
The 225hp 850 Turbo with B5234T engine had 310cc injectors and also the 850 T-5R and the automatic 850R with B5234T5 and 240hp used these 310cc injectors. When the manual 850R with 250hp B5234T4 engine was introduced it came with 350cc injectors and the 350cc injector was used for 240hp x70 T5 and automatic R with B5234T3 engine and manual R with 250hp and B5234T4 engines.
P2x T5 with B5234T3 engine came with 394cc fuel injectors and the 394cc fuel injector is also used for the new 24HT engine in P2x T5 2005- with 260hp B5244T3 engine. The new 300hp R-line engine B5254T4 in S60R and V70R introduced comes with 468cc fuel injectors. As you can see the fuel injector size has increased quite significantly from the 225hp B5234T engine to the 300hp B5254T4 engine. If it was possible to reach 300hp and still obtain all demands on the system you can be 100% sure that Volvo, or any other car manufacturer for that matter, would never have changed to bigger fuel injectors, but it is simply not possible to use a 310cc fuel injector in a 300hp setup and still fulfil all the demands.
A SW upgrade with no HW upgrade like exhaust system will make your car run hot and then lambda 0.7-0.75 is what you can expect quite soon at maximum load…
Bear this in mind when you check for upgrades that claim to give your car +300hp with stock HW and chip upgrade including sport air filter.
High air flow through the engine with a low back pressure in the exhaust system will cause less heat and therefore allow a more efficient lambda value with high performance as a result, but this also has to be considered in the SW-calibration in order to make a difference. Fuel injector size will have to be chosen in consideration with turbocharger and exhaust upgrade in order to reach a good solution.
Lambda 1 or A/F ratio 14:1 is the optimum mixture for emissions and running either richer or leaner will affect emissions creating either higher NOX level or higher CO2 levels with increased fuel consumption as a result.
This image is just to show the principal in general."
2001 S60 T5 - 3" ferrita downpipe - ferrita exhaust - - 'R' exhaust manifold - green injectors - 19T 300-70 - Bigger intercooler (42mm) - MTE custom map - Bilstein shocks - K&N -frontbrakes:320 mm 'police' brake's - Rearbrakes: CTF GroupN discs/Mevius Racing pads - subaru boost meter
Soon to be fitted: S60R Airbox, Aquamist
got plans for an LSD and spec 3+ clutch
Adam,
On his project car he also makes use of the exhaust manifold from the new 'R' engine. Do you know how much difference that makes? Is it worth the cost of buying one?
Robb
Silver 2001 V70 T5 ex-plod
Eibach lowered springs, Monroe Reflex shocks; 17" Almathea's shod with P6000's (eBay £50 net); Black leather interior (eBay £410)
Exactly how much difference it makes I'm not entirely sure because I haven't made any appropriate measurements on the same car with only the manifold changed as a direct comparison. I do think it makes a small difference but whether it's worth doing depends on how bothered you are about extracting the best from the car.Originally Posted by BrightonBreezy
Adam.
I'm sorry to hear that. Hope you feel better soon.
Robb
Silver 2001 V70 T5 ex-plod
Eibach lowered springs, Monroe Reflex shocks; 17" Almathea's shod with P6000's (eBay £50 net); Black leather interior (eBay £410)
So do i its driving me mad,I have a high post count as i work for volvo aswell and have a lot of friends on hereOriginally Posted by BrightonBreezy
SIGNATURE COURTESY OF STORM TROLL
Rubbish!!!!!
It's just that he never leaves his computer, never leaves this site and is paying some Lithuanian Student Doctor Immigrant Person £10.00 a week to give him sick notes.
BIG GREEN PLEASURE MACHINE
GONE, VERY LIKELY FORGOTTEN
now there was no need for that
SIGNATURE COURTESY OF STORM TROLL
Back to the subject
BIG GREEN PLEASURE MACHINE
GONE, VERY LIKELY FORGOTTEN
Would it be the case that bigger injectors do not increase your HP, but prevent it from dropping off as much? In the same sense that a bigger intercooler gives no great power increase (if any) but does help keep it high.
Last edited by pzorb; Thursday 9th November 2006 at 16:40.
Martin
2 strokes, 10 horse power and 8,000 miles. Read my story.
Mongol by Minsk 2007: www.mongolbyminsk.com
Only if you are running out of fuel.Originally Posted by pzorb
Adam.
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