Man of Honour
- Joined
- 11 Dec 2002
- Posts
- 10,909
- Location
- Darkest Norfolk
Hey peeps,
I have a few questions about turboing a NA car, most of the "knowledge" i have is from reading stuff on forums, understanding the theory etc but i'd like to solidify some bits of it.
Firstly what do you need & what does it do, so far i think you need:
turbo manifold: exhaust port of engine -> turbo, does this usually include the turbo -> exhaust section too?
Turbo: i know/understand this bit pretty well
Oil feeds: keep the tubby nice and lubed up, do you generally have to tap into the sump pan?
ECU solution: replacement / piggyback to control fueling based on air pressure and what else? can they interface or replace a boost controller
Knock sensor: detect DET, generally needed? links to ECU solution or just cuts fueling generally?
wastegate: control boost pressure, set at static level or boost controller
dump/recirc valve: release pressure on closure of the throttle, where in the system do recirc/bypass valves feed the air back into?
Electronic boost controller: controls waste gate, feeds from air flow sensor and what else?
Other random questions: how easy is it to dynamically control boost levels? ie have one profile for pottering around town and one for ragging it around tracks.
What are the problems with "turning off" a turbo by setting the waste gate to open on zero pressure, i assume you'd get some reduction in MPG because of the back pressure on the engine from the turbo? but equally you won't be using so much fuel as your air pressure is lower...
Finally a good reference / book recommendation would be fantastic.
cheers
I have a few questions about turboing a NA car, most of the "knowledge" i have is from reading stuff on forums, understanding the theory etc but i'd like to solidify some bits of it.
Firstly what do you need & what does it do, so far i think you need:
turbo manifold: exhaust port of engine -> turbo, does this usually include the turbo -> exhaust section too?
Turbo: i know/understand this bit pretty well
Oil feeds: keep the tubby nice and lubed up, do you generally have to tap into the sump pan?
ECU solution: replacement / piggyback to control fueling based on air pressure and what else? can they interface or replace a boost controller
Knock sensor: detect DET, generally needed? links to ECU solution or just cuts fueling generally?
wastegate: control boost pressure, set at static level or boost controller
dump/recirc valve: release pressure on closure of the throttle, where in the system do recirc/bypass valves feed the air back into?
Electronic boost controller: controls waste gate, feeds from air flow sensor and what else?
Other random questions: how easy is it to dynamically control boost levels? ie have one profile for pottering around town and one for ragging it around tracks.
What are the problems with "turning off" a turbo by setting the waste gate to open on zero pressure, i assume you'd get some reduction in MPG because of the back pressure on the engine from the turbo? but equally you won't be using so much fuel as your air pressure is lower...
Finally a good reference / book recommendation would be fantastic.
cheers
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