Altezza Build!
Altezza Build!
![[Image: LexuS-Copy.jpg]](http://i65.photobucket.com/albums/h204/Sparkystav/LexuS-Copy.jpg)
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
26-02-2022, 05:29 PM #141bonus! what sort of thing was the turbo created for?
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
WRC cars. Instead of running a restrictor (which can be bypassed with some clever engineering as they used to do back in the day) the turbo has a small compressor so there is no way to bypass it. Because they couldn't make loads of power out of them the engines wouldn't rev that high so it was all low-mid power making lots of torque. So the opposite of an altezza lol would have been nice to have such a fast spooling turbo but I'm pretty confident owens will be able to swap me for a really good turbo
fitted a new sytec billet filter. £55 compared to the £5 of the normal universal cheap filter but atleast I know it will cope and being serviceable I can keep it for years
![[Image: IMAG0473_zps57mr85bp.jpg]](http://s1295.photobucket.com/user/toshamov/media/IMAG0473_zps57mr85bp.jpg.html)
Didn't solve the horrible fpr noise so pulled out the jet pump and returned straight into the tank. Noise instantly went away but the fuel pump still sometimes gets really loud but it is rarer than before. I think the fuel tank breather might be blocked and it,s building loads of pressure. I noticed fuel seeping out of the fitting when I key off after a drive. Fuel is pretty warm too, was thinking about fitting a fuel cooler to keep the pump cool.
Still misfires on idle though and under heavy load so checked fuel pressure while driving with some ghetto gauge fitment
![[Image: IMAG0485_zpsbbzqqqyg.jpg]](http://s1295.photobucket.com/user/toshamov/media/IMAG0485_zpsbbzqqqyg.jpg.html)
Pressure didn't move at all through the whole rev range and didn't flicker when it misses under hard acceleration. This rules out fuel delivery being the issue as I know the rail pressure is always constant. Next step is to check injector resistances to see if any randomly change causing the idle misfire.
Start the car and suddenly there is a major misfire, engine is unbalanced and shakes like crazy, e-throttle dies too. Luckily I wasn't far from home so managed to drive her home. Cleared the codes on the code reader and the throttle came back then went onto disconnecting each pack to find the faulty one. Pulled out the faulty coil and it looks like it's been on the car from day one.
![[Image: IMAG0487_zpssgvdgrhi.jpg]](http://s1295.photobucket.com/user/toshamov/media/IMAG0487_zpssgvdgrhi.jpg.html)
Cracked rubber FTW! Arced across into the engine so wasn't getting spark. Covered in electrical tape and it worked really well! bought me some time so I can avoid going to toyota for a new coil.
![[Image: IMAG0488_zpshjs7u9xl.jpg]](http://s1295.photobucket.com/user/toshamov/media/IMAG0488_zpshjs7u9xl.jpg.html)
Don't have a pic but my manifold has finally given way. 3 and 4 have both cracked pretty bad, 2 looks ok but primary 1 which is always the worst has pretty much exploded. When inconel fails it fails in a pretty spectacular fashion so I got pretty lucky that it's only a small pop. The metal has split and peeled back on itself, this stuff is pretty dam strong so must have some major manifold pressure. Not sure why the pressure is so high, maybe because the wastegate pipe is blocked off and there is no turbine in the turbo housing but it would take ALOT of pressure to make it pop.
Gonna repair it on monday and have given up, time to make a steam pipe manifold!
Trying to make one CAD so I can get an idea of how many bends I need and try to make them equal length
![[Image: Mega%20turbo%20manifold_zpsmak3cgvr.jpg]](http://s1295.photobucket.com/user/toshamov/media/Mega%20turbo%20manifold_zpsmak3cgvr.jpg.html)
Cheers, it was only good once the clock struck 5 and I could work on the tez!
fitted a new sytec billet filter. £55 compared to the £5 of the normal universal cheap filter but atleast I know it will cope and being serviceable I can keep it for years
Didn't solve the horrible fpr noise so pulled out the jet pump and returned straight into the tank. Noise instantly went away but the fuel pump still sometimes gets really loud but it is rarer than before. I think the fuel tank breather might be blocked and it,s building loads of pressure. I noticed fuel seeping out of the fitting when I key off after a drive. Fuel is pretty warm too, was thinking about fitting a fuel cooler to keep the pump cool.
Still misfires on idle though and under heavy load so checked fuel pressure while driving with some ghetto gauge fitment
Pressure didn't move at all through the whole rev range and didn't flicker when it misses under hard acceleration. This rules out fuel delivery being the issue as I know the rail pressure is always constant. Next step is to check injector resistances to see if any randomly change causing the idle misfire.
Start the car and suddenly there is a major misfire, engine is unbalanced and shakes like crazy, e-throttle dies too. Luckily I wasn't far from home so managed to drive her home. Cleared the codes on the code reader and the throttle came back then went onto disconnecting each pack to find the faulty one. Pulled out the faulty coil and it looks like it's been on the car from day one.
Cracked rubber FTW! Arced across into the engine so wasn't getting spark. Covered in electrical tape and it worked really well! bought me some time so I can avoid going to toyota for a new coil.
Don't have a pic but my manifold has finally given way. 3 and 4 have both cracked pretty bad, 2 looks ok but primary 1 which is always the worst has pretty much exploded. When inconel fails it fails in a pretty spectacular fashion so I got pretty lucky that it's only a small pop. The metal has split and peeled back on itself, this stuff is pretty dam strong so must have some major manifold pressure. Not sure why the pressure is so high, maybe because the wastegate pipe is blocked off and there is no turbine in the turbo housing but it would take ALOT of pressure to make it pop.
Gonna repair it on monday and have given up, time to make a steam pipe manifold!
Trying to make one CAD so I can get an idea of how many bends I need and try to make them equal length
Shame about the manifold... Patch it up and get some boost
![[Image: Supra-logo-toyota-supras-119417_1569_512...duxjro.jpg]](http://smg.photobucket.com/user/rob-savage/media/Supra/Supra-logo-toyota-supras-119417_1569_512_zpslqduxjro.jpg.html){kind=logo}
FOSSIL FUELS
11-03-2022, 04:56 AM #147Glad it was a simple fix in the end...
Shame about the manifold... Patch it up and get some boost
Unfortunately, the TR30 has a 2.5inch outlet but the GTX has a 3 inch so my whole exhaust system is useless. Plan to hit it really hard one weekend and make the manifold and exhaust together. In preparation I made some purge bungs and press tools
![[Image: IMAG0495_zpsw3oolmnk.jpg]](http://s1295.photobucket.com/user/toshamov/media/IMAG0495_zpsw3oolmnk.jpg.html)
Also finished the manifold design. It's almost harder to mock up on CAD than in real life!
![[Image: MEGA%20MANIFOLD_zpsgrpfi3fw.jpg]](http://s1295.photobucket.com/user/toshamov/media/MEGA%20MANIFOLD_zpsgrpfi3fw.jpg.html)
Decided to not bother with a normal collector and just merge the pipes together. Makes it quite difficult to make but much easier to do the rest of the manifold. I think it's a better compromise too as the angles are really shallow even if they are all slightly different it will stop the gasses going into the other pipes so it should flow nicely and all the energy will go into the turbo. All lengths are exactly the same too, it won't be perfectly equal by the time I've made it and it's all shrunk and moved about but it will be close enough.
Will be getting on that in the next few weeks once work calms down a little and I get all the material together. Learnt a lot about making exhausts so the next one will hopefully last and perform really well
Owens finally got back to me. The TR30 is definitely a no go, Garrett don't make the parts anymore so it would cost a fortune to repair. They did offer me £400 towards a new turbo though. Not sure when they will get one in but I am soon going to be picking up a brand new GTX28 with a TIAL .86 exhaust housing so I can keep the v-band fitment and externally wasted. Plus it looks much nicer and much lighter. I was tempted to just go for a normal GT28 but with the £400 trade in value I think it actually ends up being cheaper than if I bought a brand new GT28 journal bearing turbo.
Unfortunately, the TR30 has a 2.5inch outlet but the GTX has a 3 inch so my whole exhaust system is useless. Plan to hit it really hard one weekend and make the manifold and exhaust together. In preparation I made some purge bungs and press tools
Also finished the manifold design. It's almost harder to mock up on CAD than in real life!
Decided to not bother with a normal collector and just merge the pipes together. Makes it quite difficult to make but much easier to do the rest of the manifold. I think it's a better compromise too as the angles are really shallow even if they are all slightly different it will stop the gasses going into the other pipes so it should flow nicely and all the energy will go into the turbo. All lengths are exactly the same too, it won't be perfectly equal by the time I've made it and it's all shrunk and moved about but it will be close enough.
Will be getting on that in the next few weeks once work calms down a little and I get all the material together. Learnt a lot about making exhausts so the next one will hopefully last and perform really well
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
16-03-2022, 09:28 PM #150Nice mate, and decent stuff from Owen.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
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