Differences between blue top TVIS and red top TVIS/non-TVIS

[ChaosAD]

I had an ae82 fxgt that was first registered in mid '87. and this had a bluetop with the 40mm bigends etc like all the other ae82 fxgt's. But it had a 7 rib block and a few other little bits that dont belong on a bluetop, but it still all looked standard

[escortman]

i have a AE82 fx it has tvis but i dnt no if its red or bluetop as the writing isnt coloured, where are these ribs ppl r talkin about

[Alex B]

AE82 is bluetop.

[escortman]

so all ae82s r bluetop ?
which engien is better

[Stealer Of Souls]

Yeah. As far as I'm aware, out of the factory al AE82s are blue tops.
The non-TVIS redtop (smallport red top) is the better NA engine.

As for the ribs, they can be seen on the side of the engine opposite to the oil filter (did that make sense???!!).


Here's a question.
If ChaosAD has a 7rib block with bluetop internals, does that mean that you can put blue top internals into any 4A block?

[ee904age]

Here's a question.
If ChaosAD has a 7rib block with bluetop internals, does that mean that you can put blue top internals into any 4A block?

No. I cant give an explanation for his engine, but Bluetop internals SHOULD only fit in 3 rib blocks, such as 4A carb, 4AFE and of course a bluetop.

Other than that, most parts are interchangable. My engine has a TVIS Redtop block, Silvertop 20V rods and Pistons, a bluetop head with TVIS redtop cams. You could say its a mongrel

Oh and on a side note: My TVIS redtop cams have 7.1mm lift, measured on a lathe with a DTI.

[Mr Revhead]

if you swap the crank, rods and pistons you can use any 4age internals in any 4age block

[ee904age]

Doesnt the Bluetop have smaller mains than the rest though?

[Mr Revhead]

no, smaller big ends

[escortman]

so which is the best motor

[AE85coupe]

standard? the smallport non-tvis or the bluetop are the best

the redtop tvis = shite

[crnkin]

the redtop tvis = shite

has excellent comp ratio for turbo, super strong gze sized rods (except with no flat machined "plain" on the bigend), and gze crank. but it is "shite".

it has however the lowest ("shite") stock power rating, but you wont feel it seat of the pants.

[Drifter4ag]

i would agree with the SHITE comment for redtop tvis .. .

sure it has semi large rods and large crank
but you dont need these ..

bluetop is the best for turbo madness with low boost .. small port redtop is best for madness n/a ... all the rest are horrible.

[Stealer Of Souls]

Okay... Getting a little confused now...

So you can you put (for example)...
Blue top crank
Blue top rods
Blue top pistons
Blue top head
All into a (shite) redtop TVIS block?

This is what I scavenged to learn to rebuild engines from...

Can you change to say small port red top pistons?

[Mr Revhead]

yes to the first bit.

to use the redtop pistons u need to use the redtop rods, which means the redtop crank.
or machine out the gudgeons to take the 20mm size used in the later engines

[crnkin]

Okay... Getting a little confused now...

So you can you put (for example)...
Blue top crank - NO
Blue top rods - NO
Blue top pistons - NO
Blue top head - YES
All into a (shite) redtop TVIS block?

[/b]

[Mr Revhead]

crnkin, thats incorrect

[crnkin]

correction ..
redtop tvis has 42mm .. so large crank ..large rods ..large bearings .. 9.4:1 bluetop pistons with 20mm pin

really

[Mr Revhead]

yes, blue tops have 18mm pins.
he prob means to machine them out to 20mm.

if you put ALL the bluetop bits into the block, itll work

[Stealer Of Souls]

Okay... Got it...

So all use ALL blue top stuff in any block.

Or you can use a combo of any..
smallport redtop
silver top
black top
atlantic spec
bits in a block.

Okay. So just poked myself in the eye with another question.
Can you put anything in a bluetop block? Or only bluetop internals?