Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Engine, Exhaust, Transmission (https://www.ft86club.com/forums/forumdisplay.php?f=8)
-   -   Jackson Racing Supercharger engine build: Stay at 12.5:1 comp? (https://www.ft86club.com/forums/showthread.php?t=145240)

RallyKeith 05-07-2021 09:46 AM

Jackson Racing Supercharger engine build: Stay at 12.5:1 comp?
 
I'm building an engine for timetrials/trackdays that has a Jackson Racing C30 supercharger on it and intending to run on pump 93. I have no experience with superchargers, and moderate experience with turbos. I want it to be reliable more than anything so I'm building a fresh block and crank with H-Beam rods and forged pistons, along with King XPG bearings and ARP hardware. Since I have the smaller C30, it seems like
1. it makes no sense to drop the compression down to 10.5:1 because with the C30 it's already basically maxed out on the boost/power it can make
and
2. it should still be pretty reliable with this combination staying at 12.5:1

Am I correct?

Keith

RToyo86 05-07-2021 10:13 AM

Others can chime in with more detail but at 300whp range a built motor doesn't nessessarily mean more reliable unless you address oiling issues as well.

AIG has a short block with those fixes.

RallyKeith 05-07-2021 10:35 AM

Quote:

Originally Posted by RToyo86 (Post 3430480)
Others can chime in with more detail but at 300whp range a built motor doesn't nessessarily mean more reliable unless you address oiling issues as well.

AIG has a short block with those fixes.

Is IAG basically doing everything outlined in this thread?
FA20 oiling problems, study and solution - https://www.ft86club.com/forums/showthread.php?t=134863

Keith

mrg666 05-07-2021 04:07 PM

Jackson Jr. completed races even won championships with JRSC and stock engine same with Speed Academy. I would just pay attention to cooling; oil cooler, proper ducting as shown below (5:04), and hood vents.
https://youtu.be/d0zgGIHt65M?t=313


All times are GMT -4. The time now is 04:49 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2026 DragonByte Technologies Ltd.


Garage vBulletin Plugins by Drive Thru Online, Inc.