E10 fuel

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xantia_v6
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Re: E10 fuel

Post by xantia_v6 » Tue Mar 10, 2020 6:26 pm

A few years ago Chris uploaded the XM production figures http://www.club-xm.co.uk/forum/viewtopic.php?f=2&t=7833 and there were apparently a few PRV 24V auto sold.

re E10, you can't really get any performance improvement from the fuel, as they start with a low octane base and add 10% methanol to get the rating up to the stated 95 RON (or whatever the rating is).
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Re: E10 fuel

Post by White Exec » Tue Mar 10, 2020 6:51 pm

I didn't read anywhere that E10 fuel would actually provide more performance (or economy) - quite the reverse, in fact.
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Re: E10 fuel

Post by Dean » Tue Mar 10, 2020 7:03 pm

E10 is no different to standard 95ron unleaded but E85 is the holy grail, 30% more e85 is required to match the power of standard petrol but that is the benefit, cooler intake temps due to more fuel injected and more heat removed during vaporisation and and 105 octane rating makes it very knock resistant meaning you can run more timing advance and high combustion chamber pressures meaning more power, safely.
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Re: E10 fuel

Post by White Exec » Tue Mar 10, 2020 7:09 pm

Dean wrote:
Tue Mar 10, 2020 7:03 pm
E10 is no different to standard 95ron unleaded...
I thought that our current unleaded was E5 (max of 5% ethanol), Dean.
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Re: E10 fuel

Post by Dean » Tue Mar 10, 2020 9:56 pm

Indeed but I meant proper old school unleaded. I must admit I’ve not noticed any difference running E5 and although it does emulsify something awful if left out in the air I have no problem starting the car after 2 or 3 months. I will give the new E10 a try but I’m sure it will be fine, I am running injectors that are about 50cc larger than stock.

I run the Ford AA on it with no additives and that’s happy enough, the tank evaporated dry each winter given it’s a vented tank but I chuck some more in come spring and refit the battery and she fires up and runs just fine so I have no trouble there either.

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Re: E10 fuel

Post by citroenxm » Tue Mar 10, 2020 10:04 pm

So. What stops a hp18 going forward that gradually lost forward drive with a slipping clutch syndrome to no drive..? The valve block was all good from what I could see.. I swapped it out in the end. At 267k it had earnt its living.
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Re: E10 fuel

Post by Dean » Tue Mar 10, 2020 10:32 pm

Did it stop going backwards too? I would imagine a seal gone in the fed drive clutch pack if the oil pump was outputting good pressure and there were no valve block issues.
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Re: E10 fuel

Post by White Exec » Wed Mar 11, 2020 7:06 am

That's a pretty dramatic topic swerve, even for us, guys! :?
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2003 RAV4 D4D 2.0 5dr LHD Silver WORKHORSE
1989 BX19RD Delage Red Deceased; 1998 ZX 1.9D Avantage auto Triton Green Company car 1998-2001; 2001 Xantia 1.8i auto Wicked Red Company car 2001-2003

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Re: E10 fuel

Post by Dieselman » Wed Mar 11, 2020 7:32 am

It is the clutches that wear out on a HP 4-18.
More torque will exacerbate that.
SAAB possibly increased the fluid change cycle, but probably just let gearboxes fail, with the owner picking up the cost for a rebuild.
If increasing the applied torque, it would be wise to add more cooling capacity.

I think a twin turbo installation might be easier to do....just add a pair of Xm tct turbos onto the end of the manifolds and fabricate new exhaust downpipes.
With an increase of fuel pressure, your fuel system may well have enough capacity without further modification, given those injectors you sourced.
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Re: E10 fuel

Post by Dieselman » Wed Mar 11, 2020 7:44 am

xantia_v6 wrote:
Tue Mar 10, 2020 6:26 pm
A few years ago Chris uploaded the XM production figures http://www.club-xm.co.uk/forum/viewtopic.php?f=2&t=7833 and there were apparently a few PRV 24V auto sold.
I thank that is an error. Note the year is 1996, so more likely the very first Es9J engines, also note some are attributed to being estates...which the V6-24 was never sold as.
The V6-24 was designed as the performance flagship model, the inclusion of an auto box would have made it slower than the V6-12v in manual form.
92 2.1SED M.RP5740 ECZ Sable Phenicien
92 3.0 V6-24.Rp 5713 EXY Black
92 2.1SD M.RP 5685 ENT Blue Sideral
Prev
90 2.1SD M.RP 5049 EJV Mandarin
92 2.1SD A.RP 5698 EJV Mandarin
94 2.1SD A.RP 6218 ERT Triton Green
91 2.0SI M.RP 5187 EWT White

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