Diesel modifications
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  1. #1
    Guru davemcbean's Avatar
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    Diesel modifications

    It strikes me that we haven't had much discussion on here as to worthwhile engine mods to do to Pug diesels.

    One member recently related a small amount of information about some very successful modifications that he did to his 505 Turbodiesel (higher boost, front mounted intercooler, recalibrated injection pump).

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    It seems that there's plenty of potential for getting more go out of the Turbodiesel engines, so it would be great to hear from anyone else who has experience with them.

    If you have to have an automatic Pug, for some reason, a well sorted out turbodiesel would have just the right torque characteristics to drive such a transmission. I've heard good stories about auto 505 turbo diesels. Apparently they kill the 4 cylinder petrol autos.

    Dave
    NZ Fleet
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  2. #2
    Budding Architect ???? pugrambo's Avatar
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    i'd be interested in how a rotary diesel pump was re-calibrated
    in-line pumps are simple but rotary are different
    3 x '78 604 SL

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    1 x '98 406 STDT troop carrier and i don't care if it stinks, i don't sniff it's arse Death by wank tank

    1 x '99 406SV 5spd wagon, time to burn more fuel

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  3. #3
    Guru davemcbean's Avatar
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    pugrambo:
    i'd be interested in how a rotary diesel pump was re-calibrated
    in-line pumps are simple but rotary are different
    Are both the Bosch and CAV pumps rotary?
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

  4. #4
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    I'm a diesel novice, but doesn't modding the injection pump cause smoke?

    Stupie


    2003 PEUGEOT 206 GTi

  5. #5
    Budding Architect ???? pugrambo's Avatar
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    as far as i know all 505's are fitted with rotary pumps
    smoke only occurs when high idle is greater than road speed
    99% of trucks on the road have modified pumps and a lot can be modified without disrupting the lead seal
    i have modified many trucks with great results but once you do this you lose hill climbing ability
    as most of us would know a mack powered mack truck is not the fastest but when it comes to a hill it will pass most other trucks
    it is all to do with the fuel rack on the pump which a rotary pump doesn't have
    also inline pumps can be calibrated per cylinder where as a rotary can't
    keep in mind though to increase fuel you need to increase air
    1-more fuel than air = black smoke = carbon
    2-more air than fuel = white smoke
    3-timing out by very little = blue smoke
    3 x '78 604 SL

    1 x 2018 3008

    1 x 2000 Citroen XM,

    1 x '98 306 GTi6 sadly sold

    1 x secret project

    1 x '98 406 STDT troop carrier and i don't care if it stinks, i don't sniff it's arse Death by wank tank

    1 x '99 406SV 5spd wagon, time to burn more fuel

    1 x 1994 605 SV3.0

  6. #6
    Tadpole Pooh306's Avatar
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    Default Turbo Diesel (406) performance modifications

    Interesting that this thread died somewhat a couple of years ago.

    Over the intervening years there have been some impressive work on the performance modifications available for Common Rail Diesel Engines.

    I would be interested in your thoughts on the 'chipping' of the HDi 406; where by much reported improvements are proffered. See the link: http://www.tunit.com.au/
    or if you want Peugeot specific see:
    http://www.tunit.com.au/vehicles.htm...=2315519681829
    Some fairly interesting stuff here, noting a fairly reasonable, claimed, rise in performance (109 to 135Kw and 250 to 290 nm).

    Also in the same web site is a link to the 4WD Monthly publication that has rated the work done on a turbo diesel (Holden Rodeo) which seems to confirm the claims by the tunit mob (admittedly linked from the tunit website) Definately worth the read though.
    http://www.tunit.com.au/press.html

    I have also seen similar sites from Europe and Britain.

    Also information on hiclone air turbulence generators claim some pretty impressive improvements, although I am somewhat dubious on the claims. I say somewhat dubious because my understanding of airflow is that the less impediment the better. None the less, see
    http://www.hicloneqld.com/tintech.htm

    The hiclone website also notes the use of K&N filters as a performance addition through improved air flow. I am more inclined to believe this claim.

    I guess the question that begs to be asked is; has anyone any experience with any of the modification methods mentioned above, specifically relating to the bona fides of the claimes and any real experience with improving performance in a turbo diesel Pug without doing any damage to the engine longevity.

    Cheers,

    Revz

  7. #7
    1000+ Posts cruiserman's Avatar
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    Default

    Quote Originally Posted by Pooh306
    Interesting that this thread died somewhat a couple of years ago.

    Over the intervening years there have been some impressive work on the performance modifications available for Common Rail Diesel Engines.

    I would be interested in your thoughts on the 'chipping' of the HDi 406; where by much reported improvements are proffered. See the link: http://www.tunit.com.au/
    or if you want Peugeot specific see:
    http://www.tunit.com.au/vehicles.htm...=2315519681829
    Some fairly interesting stuff here, noting a fairly reasonable, claimed, rise in performance (109 to 135Kw and 250 to 290 nm).

    Also in the same web site is a link to the 4WD Monthly publication that has rated the work done on a turbo diesel (Holden Rodeo) which seems to confirm the claims by the tunit mob (admittedly linked from the tunit website) Definately worth the read though.
    http://www.tunit.com.au/press.html

    I have also seen similar sites from Europe and Britain.

    Also information on hiclone air turbulence generators claim some pretty impressive improvements, although I am somewhat dubious on the claims. I say somewhat dubious because my understanding of airflow is that the less impediment the better. None the less, see
    http://www.hicloneqld.com/tintech.htm

    The hiclone website also notes the use of K&N filters as a performance addition through improved air flow. I am more inclined to believe this claim.

    I guess the question that begs to be asked is; has anyone any experience with any of the modification methods mentioned above, specifically relating to the bona fides of the claimes and any real experience with improving performance in a turbo diesel Pug without doing any damage to the engine longevity.

    Cheers,

    Revz
    Hiclones, dont get me started, just send me the money and you wont feel so ripped off. Oh yes this little disc will improve the power, torque and fuel economy of your car yes siree. Hell weve even got a website to back up these claims. (no I havent be burnt by hiclones)

    Chipping diesels, there are numerous companies that can piggyback the chips for electronically controlled pumps, but speaking with respected diesel fuel injection specialists - notably Cooma Diesel in Canberra the biggest denso dealer in Australia, the same people that Toyota Australia trucked a 100 series TD to that wasnt producing the right power oh did I mention that they flat topped it from Cairns at their expense so Dave could look at it. CD recomends that you are heading into a potential minefield on a pogo stick when you start messing around with these things. Perhaps you bought a diesel for the wrong reasons.

    What about LPG injection?
    Neil
    '94 405 SRBT

    '82 CX 2400 Pallas 5spd

    '77 CX 2400 Pallas 4spd manual Import

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  8. #8
    Tadpole Pooh306's Avatar
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    Default Diesel Rocket Ship

    Thanks 'Cruiserman' for the reply. As I alluded to in my post, I share your opinion of the Hiclones. However, the K&N filters are known to me through my experience with motorcycles where a good free flowing filter and pipe can make a great deal of difference (alright and some tuning and jetting and ...).

    Thanks also for the information on the Piggyback chips, your source comes across as a pretty damn reliable. Don't get me wrong, I am very happy with the HDi. It is very comfortable, handles well (not quite as well as my little 306 though) and is, arguably, one of the best looking cars on the road.

    I guess it is just easy to get dazzled by the promise of another fourty Kw and Nm with no talk of detriment. I was looking at the specs for the 407 HDi and noticed the 100Kw and, from memory, about 300 Nm which had me wondering how good/easy it would be to have just a little more oomph. I had not ever really thought of performance mods for diesels until I stumbled upon a pommy diesel tuning site and went hunting from there.

    I have no idea about the LPG injection. I have seen some water injection utilised to good effect on petrol turbo's, however, I don't see the lower running temperature nor the already low (by comparison to petrol) flamability of diesel being too compatable with water somehow.

    What if I strap a F18 or a Seahawk engine onto the roof, oh no, that wouldn't work I don't have roof racks and it would damage that lovely Samacan Grey paint work.

    Cheers,

    Revz
    406, 306, GSXR1100

  9. #9
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    Default Hiclone

    Can't say I've had the same experience.
    I put a hiclone on my 505 srdt and it was worth every cent.
    Very noticeable power increase. No change in economy though.

  10. #10
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    Quote Originally Posted by pugrambo View Post
    i'd be interested in how a rotary diesel pump was re-calibrated
    in-line pumps are simple but rotary are different
    Hi, I'm not sure what pump is on a 505 but know how to adjust the Bosch pumps like the ones on the 405 diesel. I had a Discovery with the same pump and there is heaps of info on playing with them. I achieved a marked increase in power with those adjustments and a better intercooler (I reckon maybe 20%). I should mention I did this with the benefit of a boost guage and EGT (Exhaust Gas Temp) to manage heat.

    Re the comment about the 407 HDI it is very easy to get a bit more out of them. Whilst I haven't touched my HDI yet I have a power box on my 2.5 litre CRD Pathfinder. Rather than go for the very expensive local options I went for a German made box (TDC Technologies) which I sourced thru' the US for less than $300. Good improvement in power and torque and I believe an improvement in fuel economy. I have been using a TDC box for several years and heading for 100,000kms so far. This box is available for the 2.0 HDI as well.

    Dave at Cooma diesel is an excellent resource on things diesel. His approach is very conservative which is quite appropriate if you wish to minimise any risk. Having spoken to a 407 owner who had spent a fortune on his HDI engine which the dealer attributed to the chip (but was it?) this could well be the best approach?

    Cheers

    Jim

  11. #11
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    Quote Originally Posted by clint_on View Post
    Can't say I've had the same experience.
    I put a hiclone on my 505 srdt and it was worth every cent.
    Very noticeable power increase. No change in economy though.
    Hi,
    I would be very interested in hearing what you did. Was the hiclone just fitted with no other changes whatever? What was involved to fit it? Was any thing else done as well?
    A sceptic Jaahn

  12. #12
    Fellow Frogger! Jez 405's Avatar
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  13. #13
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by clint_on View Post
    Can't say I've had the same experience.
    I put a hiclone on my 505 srdt and it was worth every cent.
    Very noticeable power increase. No change in economy though.
    I'll not dispute your experience but there is no way known to man that a turbulence generator in the inlet manifold could possibly compare to the turbulence generated in the pre-combustion chamber, which after all is the pre-combustion chambers chief job.
    504 GL Coupe '73 Silver
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