How fast is a 86 with 20V?

[20vWill]

To clarify a few things on the 20v topic....

If you want an easy and reliable transplant, a near stock blacktop is a lovely engine for the AE86 - but expect around 145bhp. Toyota's figures were tested on 100 RON fuel with NO ancillaries on the engine, so 165bhp or whatever they claim means little in the real world.

If you want to spend a fortune building up a 20v engine, get the silvertop. It's cheaper, slighty stronger and you will remove/improve all the bits that are better on the blacktop when building it up into a monster NA engine.

NoHachi speaks a lot of realistic truth but the 20hp or so difference between a stock 16v and blacktop WILL be noticeable in an AE86 because it is nearly a 20% increase in a lightweight car. This equates to nearly 30bhp/ton more. Not a huge amount, but definately noticeable.

Ian - your engine is not a "silvertop". Although the cam covers are silver, the "silvertop" refers to the AE101 20v 4AGE in Toyota anoraks vocabulary....

Your 16v unit is either a bluetop (early 4AGE), redtop (phase II 4AGE with red and black lettering) or small port (last 16v 4AGE, non T-VIS, with red lettering).

And such a 16v unit will produce more bhp per £ spent on tuning than any 20v, hence your impressive power figures.