Y8 high compression turbo build idea *brainstorming inside*
01-30-2015, 02:42 AM
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Re: Y8 high compression turbo build idea *brainstorming inside*
This is where I get a bit concerned with you giving out advise, you don't even understand the basics. Build ANYTHING get some experience and then move on to the more advanced stuff.
01-30-2015, 03:49 AM
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Re: Y8 high compression turbo build idea *brainstorming inside*
Sometimes I forget the basics lol. It's been that kind of week. It makes sense that it takes the same effort when you think about it. I'm probably too tired to even be thinking about complex ****, haven't been able to go to bed yet :/
I've built plenty of motors, more than I care to think about really, mostly a boatload of SR20s, couple RBs, few ka24s, LS v8s, b series motors, 1 liter and 600cc race bike motors, and so forth.
Besides I enjoy when you post, you give good tech
I've built plenty of motors, more than I care to think about really, mostly a boatload of SR20s, couple RBs, few ka24s, LS v8s, b series motors, 1 liter and 600cc race bike motors, and so forth.
Besides I enjoy when you post, you give good tech
01-30-2015, 01:12 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
We do SOHC and quite well. Been tested vs a few Bisi cams and they got destoried, literally. We offer New camshafts for the VTEC motors and offer hardwelding and regrinds for the motors unable to get new cores.
Y7/8 and Z6 we offer new cores. Good, proven profiles, most of our shelf stuff is listed on my website, we also offer custom stuff, obviously as well.
Y7/8 and Z6 we offer new cores. Good, proven profiles, most of our shelf stuff is listed on my website, we also offer custom stuff, obviously as well.
01-30-2015, 01:22 PM
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01-31-2015, 03:01 AM
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01-31-2015, 05:05 AM
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02-01-2015, 05:07 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
I was running roughly 11:1 static compression on my built stock sleeve 86mm(1mm over stock) F22B1. I ran 18psi on a 60/63 T3/T4 on 93 pump. No issues with detonation. I added an AEM water/methanol kit and was running 25-26psi which was easily in the 400whp ballpark. I ended up splitting the #4 sleeve in half after spiking 30psi due to a faulty boost controller. Motor had roughly 10k miles on it. It split right at top edge on the intake side and continued all the way down.
I don't think the spike would have been the death of the motor if I hadn't gone 1mm over. Taking any amount of material out of the stock sleeve and then adding huge amounts of cylinder pressure isn't going to end well IMO. I would at least have it CSS'd.
Another thing to note, E85 and meth injection together seems a little redundant to me. It is also adding unnecessary complexity to the setup with the secondary injection system, creating another system to fail. I would just stick to E85 alone since it does a very good job of cylinder cooling to begin with.
I don't think the spike would have been the death of the motor if I hadn't gone 1mm over. Taking any amount of material out of the stock sleeve and then adding huge amounts of cylinder pressure isn't going to end well IMO. I would at least have it CSS'd.
Another thing to note, E85 and meth injection together seems a little redundant to me. It is also adding unnecessary complexity to the setup with the secondary injection system, creating another system to fail. I would just stick to E85 alone since it does a very good job of cylinder cooling to begin with.
02-01-2015, 06:45 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
I was running roughly 11:1 static compression on my built stock sleeve 86mm(1mm over stock) F22B1. I ran 18psi on a 60/63 T3/T4 on 93 pump. No issues with detonation. I added an AEM water/methanol kit and was running 25-26psi which was easily in the 400whp ballpark. I ended up splitting the #4 sleeve in half after spiking 30psi due to a faulty boost controller. Motor had roughly 10k miles on it. It split right at top edge on the intake side and continued all the way down.
I don't think the spike would have been the death of the motor if I hadn't gone 1mm over. Taking any amount of material out of the stock sleeve and then adding huge amounts of cylinder pressure isn't going to end well IMO. I would at least have it CSS'd.
Another thing to note, E85 and meth injection together seems a little redundant to me. It is also adding unnecessary complexity to the setup with the secondary injection system, creating another system to fail. I would just stick to E85 alone since it does a very good job of cylinder cooling to begin with.
I don't think the spike would have been the death of the motor if I hadn't gone 1mm over. Taking any amount of material out of the stock sleeve and then adding huge amounts of cylinder pressure isn't going to end well IMO. I would at least have it CSS'd.
Another thing to note, E85 and meth injection together seems a little redundant to me. It is also adding unnecessary complexity to the setup with the secondary injection system, creating another system to fail. I would just stick to E85 alone since it does a very good job of cylinder cooling to begin with.
02-01-2015, 06:55 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
It's not that complicated. I could either have the standalone control the pump and solenoid or use the digital controller Aquamist includes with their kit which does everything from failsafes to external triggers. The methanol setup would be fairly simple on this motor... Single pre throttle body nozzle, possibly one at the compressor outlet if outlet temps are skyhigh. This opposed to the multi nozzle and multi location setup I'll be using on my built lsvtec.
At higher pressures the 16g loves to heat up air and my main concern is intercooler efficiency and heat soak. If compressor outlet temps are up over 225 degrees or so the intercooler would struggle to bring that down far enough. Hot air means less power and a higher chance of detonation. While e85 does a great job of evaporative cooling I'm simply trying to supplement that by making pre injector IATs as low add possible. I'm kind of an efficiency nut that way lol. I probably wouldn't use it all the time, only when boost pressures are turned up past the point where compressor outlet temps become too high. So for typical driving the system would be off.
The other reason I want it is there's only one e85 station by my house and one in the town I just moved from. If I go anywhere else like downtown Atlanta I'm **** out if luck and will have to use 93. That means turn down the boost and turn on the methanol.
At higher pressures the 16g loves to heat up air and my main concern is intercooler efficiency and heat soak. If compressor outlet temps are up over 225 degrees or so the intercooler would struggle to bring that down far enough. Hot air means less power and a higher chance of detonation. While e85 does a great job of evaporative cooling I'm simply trying to supplement that by making pre injector IATs as low add possible. I'm kind of an efficiency nut that way lol. I probably wouldn't use it all the time, only when boost pressures are turned up past the point where compressor outlet temps become too high. So for typical driving the system would be off.
The other reason I want it is there's only one e85 station by my house and one in the town I just moved from. If I go anywhere else like downtown Atlanta I'm **** out if luck and will have to use 93. That means turn down the boost and turn on the methanol.
02-01-2015, 07:16 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
No way p29 pistons will survive, they break on all motor setups.
Next year I am going to put a heavily milled y8 head onto a block with 137.9mm p72 rods and vitara pistons, block is decked so pistons are flush and the y8 head will put it at 10:1 ish compression. Car went 114 mph in the quarter in '14 with 8:1 compression and a stock y7 cam running 15-17psi on a td05hr-16g 9.8 on pump e85.
There's a guy that built a super high compression y8 head motor on DSO, he used a tiny turbo and a ton of boost with great results.
Next year I am going to put a heavily milled y8 head onto a block with 137.9mm p72 rods and vitara pistons, block is decked so pistons are flush and the y8 head will put it at 10:1 ish compression. Car went 114 mph in the quarter in '14 with 8:1 compression and a stock y7 cam running 15-17psi on a td05hr-16g 9.8 on pump e85.
There's a guy that built a super high compression y8 head motor on DSO, he used a tiny turbo and a ton of boost with great results.
02-01-2015, 08:11 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
Oem p29s maybe, the Nippon p29s are cast the exact same way as their vitaras just with a dome.
02-01-2015, 09:30 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
I'm confused too. Water, meth, e85, boost and high compression seems like 1 of the five negates the other 4. And if you drop just one.... You will make more max power.
Ok.... Cramming all that water, two alcohols and twice as much liquid as you should be in a a small displacement high iat motor is probably going to make worse power because the lack of area for combustible air... Just no real estate in there.
The other thing is the octane ratio of e85 and water vs e85 and straight alcohol may work against you.
Maybe you should shoot some nitrous in there too for those pistons!
Also I may be completely wrong here but since you started brainstorming first and got me brainstorming its your fault you made me thing this and post in your thread. You messed up and should be punished.
But a ray of light maybe that e85 water meth and boost can work well on carbs with big displacement.
Ok.... Cramming all that water, two alcohols and twice as much liquid as you should be in a a small displacement high iat motor is probably going to make worse power because the lack of area for combustible air... Just no real estate in there.
The other thing is the octane ratio of e85 and water vs e85 and straight alcohol may work against you.
Maybe you should shoot some nitrous in there too for those pistons!
Also I may be completely wrong here but since you started brainstorming first and got me brainstorming its your fault you made me thing this and post in your thread. You messed up and should be punished.
But a ray of light maybe that e85 water meth and boost can work well on carbs with big displacement.
02-01-2015, 10:21 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
It all comes down to injection rate. It won't require much with e85. It's mostly there for when e85 isn't available.
None of those negate each other. People are running 13.5:1 sleeves turbo motors on e85. The methanol is also a safety net as e85 won't actually be 85% ethanol all of the time. Purity varies widely. So if I get a low ethanol content tank one time the methanol is there just in case. Granted I'll be flex fuel but still.
None of those negate each other. People are running 13.5:1 sleeves turbo motors on e85. The methanol is also a safety net as e85 won't actually be 85% ethanol all of the time. Purity varies widely. So if I get a low ethanol content tank one time the methanol is there just in case. Granted I'll be flex fuel but still.
02-01-2015, 10:42 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
It all comes down to injection rate. It won't require much with e85. It's mostly there for when e85 isn't available.
None of those negate each other. People are running 13.5:1 sleeves turbo motors on e85. The methanol is also a safety net as e85 won't actually be 85% ethanol all of the time. Purity varies widely. So if I get a low ethanol content tank one time the methanol is there just in case. Granted I'll be flex fuel but still.
None of those negate each other. People are running 13.5:1 sleeves turbo motors on e85. The methanol is also a safety net as e85 won't actually be 85% ethanol all of the time. Purity varies widely. So if I get a low ethanol content tank one time the methanol is there just in case. Granted I'll be flex fuel but still.
02-02-2015, 12:27 AM
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Re: Y8 high compression turbo build idea *brainstorming inside*
partially cooling but really to lower the volatility of pure methanol
02-02-2015, 01:20 AM
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Re: Y8 high compression turbo build idea *brainstorming inside*
I wouldn't take what "Nippon" says for the supreme fact, besides there is more to why a Vitara works besides the casting process.
hint: GX
hint: GX
02-02-2015, 01:44 AM
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02-02-2015, 01:47 AM
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Re: Y8 high compression turbo build idea *brainstorming inside*
and there's probably a 99% chance that I'm way overthinking this because I can't sleep...
02-17-2015, 04:40 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
Working on my lsvtec. Y8 is sitting in the corner. Still debating if trying this on stock sleeves is just a grenade with a loose pin. Plus I'm lucky I even survived the ice storm from hell last night. Over 5 trees a minute fell around my house. It looks abd sounded like a bombing run. So much clean-up to do 
02-20-2015, 08:23 AM
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02-20-2015, 09:15 AM
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04-03-2015, 05:24 PM
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Re: Y8 high compression turbo build idea *brainstorming inside*
I think you people misunderstand the whole idea part.
right now I'm just trolling around looking at other high compression d series builds to get an idea of longevity and such. I was tossing around the idea of just doing forged internals but I can't find a "shelf" forged piston over 9:1 static CR. Certainly not forking out money for custom forged pistons on a bullshit just for kicks build.
There isn't a chassis for this motor yet. seeing as how I currently have 4 project cars and a project bike (2 of them hondas) I'm certainly not buying another honda soon, namely since I have no room for one.
Only car I'm even debating about picking up is this mint body widebody starion that has been stored at the place I store the van at for almost 20 years. Paint is fucked but theres no rust, dents, etc. Complete car. needs love but i've wanted a starion forever and if I can convince the guy to sell it I'll probably get rid of the accord at the least.
Unless a clean ED or EF sedan/wagon comes my way for the right price this motor might sit. Need to make up my mind about the whole high compression thing
right now I'm just trolling around looking at other high compression d series builds to get an idea of longevity and such. I was tossing around the idea of just doing forged internals but I can't find a "shelf" forged piston over 9:1 static CR. Certainly not forking out money for custom forged pistons on a bullshit just for kicks build.
There isn't a chassis for this motor yet. seeing as how I currently have 4 project cars and a project bike (2 of them hondas) I'm certainly not buying another honda soon, namely since I have no room for one.
Only car I'm even debating about picking up is this mint body widebody starion that has been stored at the place I store the van at for almost 20 years. Paint is fucked but theres no rust, dents, etc. Complete car. needs love but i've wanted a starion forever and if I can convince the guy to sell it I'll probably get rid of the accord at the least.
Unless a clean ED or EF sedan/wagon comes my way for the right price this motor might sit. Need to make up my mind about the whole high compression thing