blakeman8192
Well-Known Member
100% this. Power delivery is just like NA, but with a whole lot more of it.Centri will be everything you love about the character of the coyote engine, but more. True story.
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100% this. Power delivery is just like NA, but with a whole lot more of it.Centri will be everything you love about the character of the coyote engine, but more. True story.
Iām the wrong guy to engage in this conversation but figured what the heck Iāll throw this out there.Hey, I can safely say that very few people kick my ass at autocross. I beat Shotz's ZL1 1LE (whipple) Optima car in 2022 at Nationals and took the W right out from under him.
Last year I did loose to Shotz's fully built SS 1LE, Otis's ZL1 1LE (who is local to me and usually spanks everyone - he's an alien), and a 4-banger Camaro. I was sore about losing to the 4 cylinder.
So, that doesn't tell us much about what's the winningest combination (turbo 4, NA V8, Wipple V8), but I run against Otis a lot and I do feel like his power AND 2nd gear top speed limits are impactful. Shotz thought his ZL1 was front top heavy with the blower which is I think why he said he built the NA SS car for '23.
I figured the Centri might be a win if I can keep at least my currently level of low RPM torque (after dropping down to 3.31) - the car wouldn't be any slower at low RPM, and it would be faster at high RPM and could run to 70. We're often in a low RPM out of low speed tight corners, but you can't really romp on it until you get the car straightened out some, which leaves some time for the RPM/boost to build. My general strategy is to optimize for the fast sections (but those are going to often be ending in some sort of maneuvering through offsets or slaloms at nearly 65mph, so front-top whipple weight may indeed be an issue.
Now I'm curious about that Camaro build, but can't find anything about it.Hey, I can safely say that very few people kick my ass at autocross. I beat Schotz's ZL1 1LE (whipple) Optima car in 2022 at Nationals and took the W right out from under him.
My question is: Are you planning on installing a fuel system? (Or KPM type of upgrade) so that you can run E85?Good man
Yeah I see that they dont have lag, theyāre just weaker at low RPM. Im my case (autocross), Iāll be in 2nd gear at whatever RPM the course allows, and if Iām getting on the power its probably digging out of a 35mph corner to accelerate up to 70mph before hitting the brakes for the next slow element. I need more than NA torque to pull out of corners at low RPM and to makeup for the torque hit Iām going to take from switching to 3.31 gears
It looks like Centris sort of do that. Iād have a little more power at 3k than stock but not tons more and sure once I get going things will build ok. With a turbo, by the time it spooled Iād be out of time and hitting the brakes. Its very hard to prespool for a corner exit with your foot, so turbos are out, but Iām on the fence about Centris
A wipple might be the right choice for power delivery (more boost at low RPM??) but theyāre heavier and more expenaive.
Should have went procharger, but at least you got a centri nevertheless. Congrats-ish.Well, I went and did it, ordered the G3X kit with a G4 intercooler...having had cars with Turbo and PD in the past, I figured it's about time to try a Centi since I already knew what I didn't like about the others ...
Ah good point about the pully! TYMy question is: Are you planning on installing a fuel system? (Or KPM type of upgrade) so that you can run E85?
IMHO, the centri setup will work great for what you are trying to achieve provided you get the benefit of the additional timing you can add with E, and the ability to pulley down. People saying that ātheyāre weak down low, no power until 5k rpm etcā are running conservative setups that arenāt exploiting the system properly.
ESS or Procharger, E85, and a pulley that will net you 13-14 psi, and you will see boost the moment you tip into the throttle.
people running pump gas and a giant blower pulley are sad because they arenāt coming anywhere near the full potential of the system
Exactly. You spend very little time at redline. Pulley so that youāre making power as soon as possible. The ethanol helps not only with timing, but cooling the cylinders (especially important if you have a stock bottom end with very tight ring gaps)Ah good point about the pully! TY
I was thinking about my conservative top end goals and not considering setting a pully size for good low RPM boost.
Yes I'd get a fuel system if my goals require a fuel system. Chances are I'll be messing around with surge tanks anyway (fuel starvation issues on track)
Genuine question - why would Procharger have been the better choice?Should have went procharger, but at least you got a centri nevertheless. Congrats-ish.