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    UNF better than metric?

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    UNF better than metric?

    When you tighten a bolt you obviously put tension on the thread. The finer the thread the weaker it will be and the bigger the the base diameter of the bolt. The only way to counteract this is the have more thread length. I have not claimed that F1 doesn't use UNF threads. All I am saying is...
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    The Astra Track Day Car

    Apex are quite good. I have dealt with them for years and never had any problems with them. Cross drilled are okay when they are designed for it as some Brembos are. Grooved/slotted discs are much better. Don't go for too many grooves. 3, 4 or 6 are more than adequate.
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    Astra 2002 1.6 CDE ecu mapping

    Either post or mail me a picture of the engine bay, just to make sure that we talk about the same car. I will come back to you with a solution that works.
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    UNF better than metric?

    It might have occured to you that forums are information bases. What is the point of having the knowledge when it is not being used? Unlike the ones who want to make believe that only the 'chosen' ones can do the work I am, I give my knowledge away. And to clarify this: If I make claims, I am...
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    Astra 2002 1.6 CDE ecu mapping

    You can't just plug in a computer. There is a lot more to it. If you have as much ICE as you are claiming then there is no wonder that your car is slower than others. Before looking into the ECU you have to sort out the breathing. This starts with a dedicated air intake, not just a kit off the...
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    UNF better than metric?

    If you had thought about what I wrote you wouldn't have made such an immature comment. Threading goes back many hundreds of years. Standards only came in due to industrialisation. Different global powers standardised them differently. Rather than implying what my motives are, switch on the...
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    UNF better than metric?

    The thing is, there isn't an advantage to use one or the other in general. Both can be made working evenly well, depending on application and approach. I am living engineering and not bothered with either of the 2c norms. What it boils down to is the material the threads are made of. About...
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    saxo vts tuning

    I have been working for BMC (as a consultant) to make the CDAs work better with appropriate intake modifications. Whatever the results possible, with twin cone filters (other than the BMC ones) we achieved better results. The CDA needs a lot of re-working to bet as good as the best flowing twin...
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    UNF better than metric?

    When the thread is finer than the metric fine threads then you need a longer bolt as the thread can't take as much tension as the bolt (thread length needs to be longer than bolt width). The question is what you want to let go sooner if things are stressed over the limits or for safety reasons...
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    saxo vts tuning

    The CDA is in no way better than an open twin cone cotton gauze filter. BMC is a waste of money.
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    Astra H 1.9 CDTI SRI 150 Remap advice

    The problems you might encounter is slowly killing the turbo seals with too much unburnt fuel. If you constantly driving on the limit with a much higher power/torque (than the re-map to 190bhp/320lb ft) the drive train can suffer too. If you wish to see more power/torque than 190bhp/320lb ft...
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    Limiting power for new drivers

    You are still young from my point in life.:toung:
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    UNF better than metric?

    It depends on the pitch. The finer the pitch, the bigger the threads diameter. bolts are designed for different uses, which are tensional, torsional or sheer forces or a combination of them. The metric system has many applications that are not available in just any hardware shop. The...
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    models

    Welcome to the forum. Can you be a bit more specific?
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    Astra H 1.9 CDTI SRI 150 Remap advice

    Celtic Tuning beats anything on paper. I personally would not go near them. Your local tuner has certainly done a better job with more realistic figures. !40kw is around 190bhp, which I would not want to exceed as long term trouble will be on the way.
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    saxo vts tuning

    There is a reason for it why the fuel pressure is regulated with the relevant pressure for your set-up. If you up the pressure then you loose pressure level stability sending your ECU into hard work mode, which results in constantly changing injection patterns. This in turn will make your car...
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    Alfa 155 2.0 - Turning into a fun/track car

    Hope you will have the same fun as I am having with it. I am trying to keep up the good work. Tomorrow, I will do some more on it expecting a lot more surprises on useless weight being removed. Start a thread on your's too.
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    New Peugeot 208 GTi

    How do you know the 208 is crappy? Have you owned one? This is a rather immature statement. Also comparing a new and a second hand car on price does not work very well.
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    re-map or not!

    Just avoid door step mappers. The least they should have is a rolling road.
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    Aluminium Wheel Nuts

    You can't harden aluminium like steel. Depending on the alloy, they can be very good and durable.
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    UNF better than metric?

    Your chassis builder is talking utter rubbish. The general rule is that a bolt will have reached its full tensional strength at the depth being equal to its diameter. Additional depth can be given for a variety of reasons, which range from assembly to maintenance. Whatever thread type is being...
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    New Peugeot 208 GTi

    The 208 GTI is about a passenger lighter than the 206 GTI 180.
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    Limiting power for new drivers

    This is not quite true. Female drivers are getting a lot more aggressive in these days and some insurances class women now a higher risk than men.
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    Pothole budget is too small

    The problem could be solved easily. Gang chain prisoners, let them dig up the roads, prepare them properly and surface. no big budget needed for this. And prisoners are used for a good cause.
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    Limiting power for new drivers

    At the end of the day it does not matter how fast a car is. It does matter how the power is being used. Unfortunately the restrictions you want to employ hit the ones that are reasonable. The only way to prevent people abusing what they have got is strict sentencing. A foreign proverb...
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    How not to make an exhaust

    No, but AMD is going to be a customer of mine. We are in negotiations. One day I am going to reveal who I am. ;)
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    saxo vts tuning

    What you call an up-rated fuel pressure regulator will make things only worse. As Waynne stated your exhaust is one part of the problem and possibly your induction is another one. What induction have you fitted?
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    Limiting power for new drivers

    This willsolve nothing. It is very easy t increase the power to silly amounts and most likely turning the cars into death traps.
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    Alfa 155 2.0 - Turning into a fun/track car

    I looked a bit further. And a couple of hours later I had removed over 35kg of which the spare wheel was just under 16kg. Not bad for a start. There will be a little more to come from the boot, but for now I will move onto the rear of the passenger compartment. So far removed 35kg. This makes...
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    Alfa 155 2.0 - Turning into a fun/track car

    Why on earth an Alfa 155? Well, it came up, looked at me, I looked at her and that was it. Actually, it is quite a good platform to work with. And they are cheap to buy right now. Performance comes from a widespread torque per ton on the wheels. Some people might confuse power with...
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    Limiting power for new drivers

    I think the problem has to be tackled in a totally different manner. first of all the law should be changed. People who who cause accidents with personal by reckless driving should be banned either for life or at least several years. Breaking the ban should result in at least 5 years prison...
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    How not to make an exhaust

    Re: How not to make an exhust This is work in progress. The exhaust is now finished. Still, a lot more is to be done including the boost pipes, oil cooler, some water hoses, air intake, electrics and mapping. The whole system is section welded from mandrel prefabricated sections and made by...
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    What would put you off owning a Ferrari?

    The fact that it is made by Ferrari would put me off buying one. I hate the Ferrari philosophy with great passion. At second thoughts: Ferrari hasn't got a philosophy. Unless sreeling ideas and technology is one.
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    How not to make an exhaust

    Had this car yesterday on the ramp. First of all the tail pipe was not sitting straight and stuck out to far. The bend to avoid the rear axle beam was not aligned hitting the beam. The reverse welds and the stepping up and down is very unprofessional. This was sold as a performance...
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    307 1.6 16V antipollution

    In some cases it is a faulty MAP sensor.
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    Suzuki Swift Sport - Basic Tuning China Help!

    Never ever use a piggy back with any charger. either do it with a stand alone or with the original ECU, which is with some possible.
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    silly question, but can you glue silicone hoses together?

    Gluing them together will not last. Custom hoses are the only real option.
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    De-Cat Warning (UK)

    Did you check properly?;)
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    Will 80mm silicone hose stretch 4mm?

    You forgot to high light this part. :lol:

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