that is wat my mech in kl told me,.....most of the 7a cant rev >7k rpm......his 7a can rev till ~8.5 to 9k rpm no problem, stil got power
im stil not decide yet supercharge or 7a......
---------- Post added at 09:22 PM ---------- 6 hour anti-bump limit - Previous post was at 09:17 PM ----------
most important.....is 7a reliable..?
Yeah...7A-GE for me reliable...if u want to try...because u dont need to step on your paddle till crack your car floor...hehehe...and it's got low fuel consumption....much better than BT...its also got good torque at lower RPM....
my advise...if u want to build 7A-GE 20V...basic spec that i acknowledge..
1. use OEM 4age 20v pistons with 7A block(81mm bore..same as 7afe)
2. better use 7A oil sump and 4A oil pump...but you need to modify air cond compressor bracket
3. 0.8mm TRD metal head gasket can use....without any problem...
4. 1jz fuel pump with fuel regulator.
5. Adjustable cam pulley on exhaust side.
6. E-Manage blue for finest tune-up
7. 4A-ge 16V timing belt
8. if u have extra money...buy conrod bearing..KING BEARING...for 7AFE...ACL doesn't have for 7AFE...as i know..
hope it'll help u....but remember mine is using Racing stuff...if u use standard stuff i think it will be long lasting..