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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster)  
Joined:
2003/12/3 0:49
From Burbank, CA
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Quote:
Dodgeman wrote:
Quote:
pager wrote:
a knock sensor would be part of a engine management system, but if someone wants to make one that will dump the vacuum advance ( maybe even retard the mech advance???? ) as knock gets louder, that should be fairly easy.
If your spark is completely controlled by the distributor, then a knock sensor will be of very limited value.
exactly... it's not going to be a real system, real EMS with a TPS and all that is what it takes.
Posted on: 2006/9/12 0:52
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Re: time to build a boost friendly a-series for a15ett |
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Just popping in
Joined:
2006/9/8 13:38
From qld downunder
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its good to see some brains here dogeman have been out the game for many years. this club has inspired me to get back into my datsun 1000 i start my blown a12 towmorrow wish me luck want to run high boost aswell datsun 1000 part needed
Posted on: 2006/9/11 10:35
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raceace use to race race cars then he raced yachts. now iv'e entered human race by haveing lots of tots. 
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) 
Joined:
2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote:
pager wrote:
a knock sensor would be part of a engine management system, but if someone wants to make one that will dump the vacuum advance ( maybe even retard the mech advance???? ) as knock gets louder, that should be fairly easy.
A knock sensor is tied to the engine management computer. It can not retard the vacuum advance or the machanical advance, it provides an input to the computer, & the computer retards the spark as long as it has full control of the spark. If your spark is completely controlled by the distributor, then a knock sensor will be of very limited value.
Posted on: 2006/9/11 10:22
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) 
Joined:
2003/12/3 7:56
From Christchurch NZ
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measure the combustion chamber volume before using that head you have found.
Don't assume that the hole looks bigger so I must be.
Posted on: 2006/9/11 5:02
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) Joined:
2003/12/3 0:49
From Burbank, CA
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Quote:
pager wrote:
Quote:a knock sensor would be part of a engine management system, but if someone wants to make one that will dump the vacuum advance ( maybe even retard the mech advance???? ) as knock gets louder, that should be fairly easy.
Dont know how long the engine will last. Even the slights ping does small amounts of damage.
literally... as the sensor hears it, it can't retard the timing if it's not making any knock.
Posted on: 2006/9/11 2:57
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) 
Joined:
2002/3/20 3:40
From Melbourne, Australia
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they were a couple of my good mates, a lot of pride was at stake, they were racing...
both the dyno and quarter i did when the car had a lot of bugs, you know that, im not going to explain that to you AGAIN
unfortunately i havent done either again when the car has been running better
Posted on: 2006/9/11 2:09
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) 
Joined:
2002/8/6 2:24
From Brisbane, Australia
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Quote: -"how many more engines will it take before you realise that twin turbo setup is fundamentally flawed?"
AT LEAST FIVE TO TEN i'd love to hear your explanation of that theory (i have dragged off modified wrx's, skylines and 250kW plus commodores) its got potential as long as i get it half reliable. correct me if I'm wrong, but your dyno graph showed something like 100bhp at the wheels? And your best quater mile was 15.something? Are you sure those WRX's skylines and commodores knew they were racing? I've said it before - street racing proves nothing.
Posted on: 2006/9/11 1:02
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Re: time to build a boost friendly a-series for a15ett |
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Home away from home  
Joined:
2003/3/21 0:15
From Tamworth, NSW
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Quote: a knock sensor would be part of a engine management system, but if someone wants to make one that will dump the vacuum advance ( maybe even retard the mech advance???? ) as knock gets louder, that should be fairly easy. Dont know how long the engine will last. Even the slights ping does small amounts of damage.
Posted on: 2006/9/10 23:51
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Re: time to build a boost friendly a-series for a15ett |
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Guest_
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umm i know how to read compressor maps nbut these ones dont have them. if you can find some compressor maps for the stock turbo on the daihatsu, that would give 1200rc all the info he needed.
The set up ran well for what it was in blowthru set up... it did not get these major problems until efi kicked in... probably the tune and maxing out the injectors etc made too much power for the set up therefore making the turbos flow outside their maximum.
Posted on: 2006/9/10 23:40
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Re: time to build a boost friendly a-series for a15ett |
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No life (a.k.a. DattoMaster) Joined:
2003/12/3 0:49
From Burbank, CA
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i haven't had time to read all this, but the short answer seems to be lack of tune and inadequate waste gates to keep the turbos in check.
compressor maps are fairly easy to read, garret even has a tutorial in reading them.
seems that the lack of tune blows up rings, there may be better rings out there, but that's no fix, getting a good sleeve put in and getting the block o ringed would help, but you still need to lower the static compression if you want to run 15 psi on pump gas!
a knock sensor would be part of a engine management system, but if someone wants to make one that will dump the vacuum advance ( maybe even retard the mech advance???? ) as knock gets louder, that should be fairly easy.
maybe get a motor that's reliable for 50,000 miles at 5 psi then crank up the boost as you can get it running properly.
it's easier to run high boost with MPFI... carbs are going to have issues that kill motors. ( yes even well tuned ones some times have problems that mpfi can never have and kill your motor. )
Posted on: 2006/9/10 17:54
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