4AGE Build - Thoughts

[hitoriko]

Car - AE86

motor - 4AGE N/a Build

use - Track

problem - Im not sure im building it right..

Ok heres the deal im starting to source bits for my 4age build and im starting witht he head, im just wanting to know if there is any problems with what im doing or better options that i can use.

This is head only.

Bigport Bluetop Head
- 256/264/272/288 cams (depends what i can find)
- HKS adjustable cam gears
- HKS/TOMEI/Greedy/TRD/Gates Timing Belt (doesn't matter which really)
- clear cam gear cover
- stainless os valves (32mm intake and 27.5mm exhaust) with bronze guides
- Ferrea racing valve stem seals
- std lifters
- HKS/Crow double valve springs & retainers
- 4AGZE or 7MTGE injectors
- JDM RWD intake TVIS butterflies removed
- reco head with lots of port work and maybe decked 10 or 20thou

is there anything i shuold do extra to the head to make it better, should i upgrade the lifters aswell? i feel like im missing something but not sure what

ideas?

[trueno85]

what computer are you going to run? not doing anything on the bottom end?

[PeakingDuck]

How many kw's does the clear cam cover add?

[hitoriko]

Bottom end
- 40thou 3rib bored block
- 40thou TIK Pistons
- std rods
- MAHALE 040 racing rings
- std crank reco
- KING/ACL bearing throughout
- ARP bolts throughout
- std oil pump (modified spring for better pressure)
- std oil pickup
- std sump

[hitoriko]

none - you fail at being funny

[slideways]

Well It looks like you are prepared to spend a bit of coin, so for the money + sound this is what I would do....


Find a Blacktop head.

O.S. Valves if you want, more importantly, get the chambers ported and cc'ed.

Upgrade springs, Solid lifters. 1sz lifters from a yarris work.

With solid lifters you can start looking at higher lift cams.

288 duration would make for good all round performance. And a sexy lump idle.

Quad throttle's

ARP head studs, metal head gasket.

Forged pistons, shot peened rods and a balanced crank shaft in a 7 rib block.

A qaulity oil cooler with braided lines and nice big fittings.

And your set.

[PeakingDuck]

If your 86 is intended for track you may as well not fit any cam cover.

IMHO sell the clear cam cover and put the money towards your performance upgrades.

[hitoriko]

ok well i dont want to go to over the top, i've spent too much time gatering parts and not enough building and i dont want to run ITBs.

valve springs - i'll upgrade as i ahve to with the bigger valves.
im considering cams of 272in and 288ex with about 8mm lift
and yes arp bolts through out.

the pistons i have seem to be quite good actually, and as for rods i was thinking 4AGZE or Spool, but i was also wondering if there are aother rods that fit like from another motor.

i have a greedy emanage piggy back i'll be running and i'll try and find a JDM bigport ecu aswell

Headgasket i was looking at a cosmetic on 1mm thick - would this be about right? or should i uses a lower one like .5mm HKS one?

[hitoriko]

i'll be using the clear cover so nothing kicks into teh cam gears (low chance of it happening) but why risk it esp since i already got the cam cover and got it cheaper than the group buy that was run.

[hitoriko]

how hard is this to do and is it a requirement of bigger cams or is it just something you should do for peace of mind?