20v headers on 16v - Starter Motor Interference?

[damo666]

Hello,

I know there have been 1001 '20v extractors on 16v' posts...but I hadnt seen this one before.

There was reference on another forum of the 20v extractors fouling on the 16v starter, which is the first time I've seen this - apart from the bolt hole issue, has anyone had this problem getting them on? (blacktop extractors on a 16v)

[Ben Wilson]

It probably depends on the type of starter you've got. I know my extractors (mr2) were designed for the standard starter, but hit on my reduction drive unit. I extended the primaries by 1" or so, then when I fitted a ZE they fouled on the alternator.

There's not much left of the extractors I bought

[damo666]

Thanks Ben,

Its currently a standard smallport -> I think i'll just look out for a cheap set and will see what happens.

[Ben Wilson]

Have you got the extractors?

I've got a set of slivertop extractors (no downpipe) in the shed if you want to have a look at clearences.

[driftymcgee]

Blacktop 20v headers definitely foul on the starter on my Bigport fwd 16v

grabbed a spacer, all good, not ideal but cheap

[Lachie]

Why worry about extractors? According to the 4A guru's (aka bilzilla aka Bill Sherwood) the standard 4A manifold is of such good design replacing it won't get you any gains unless your making more then 200hp.

Save your money for something that will actually make your car faster

[Ben Wilson]

The FWD ones weigh a tonne though.

[Lachie]

The FWD ones weigh a tonne though.

to be honest I never thought of this, what the weight actually like compared with an afetrmarket set

[Ben Wilson]

Not sure, but they are heavy, if I remember I'll throw some on the scales tonight.

[Wayne]

Why worry about extractors? According to the 4A guru's (aka bilzilla aka Bill Sherwood) the standard 4A manifold is of such good design replacing it won't get you any gains unless your making more then 200hp.

Save your money for something that will actually make your car faster

If i'm not mistaken, bills 4AGE was in a ae86

It was actually me who said the starters interfere. Not sure if they're ST or BT headers, but i was under the impression there's no difference between the 2.

[Lachie]

If i'm not mistaken, bills 4AGE was in a ae86

It was actually me who said the starters interfere. Not sure if they're ST or BT headers, but i was under the impression there's no difference between the 2.

Bills made many 4AGE's and on his page he has details on all 4A and how to get more power from them, I'd recommend anyone remotely interestered in 4A's takes a look.

heres a link to the mods page
http://www.billzilla.org/4agmods.htm

and to his general car page (heaps of 4A and toyota stuff)
http://www.billzilla.org/carindex.htm

[takai]

Yeah, Lachie, the point which Wayne is making isnt that Bill makes lots of engines, but rather than he is using an AE86 which is RWD and the RWD manifolds are certainly lighter than the FWD ones.
My Hurricane extractors (FWD) were about half of the weight of the GZE exhaust manifold which i got with the half cut. And the Kellam (TRD?) copy manifold was about half of the RWD manifold again.

Also, the stock manifolds are a 4-2-1 design, which while good for the road, and for rally, certainly arnt as nice for circuit where you want the power band to be up nice and high (mine only just starts falling at 8700rpm).

[damo666]

Have you got the extractors?

I've got a set of slivertop extractors (no downpipe) in the shed if you want to have a look at clearences.

Thanks for the offer Ben,

I did get them.....just before I noticed driftymcgee's post.....doh
Looks like i'll have to take to them with the grinder.

But on the positive side, the same guys has (had) C56 LSD box for it, yay!

[Ben Wilson]

Nice

I tried to weight them last night, but my scales aren't accurate enough. The 20v jobbies were surprisingly heavy to pick up (compared to aftermarket), but not heavy enough to register on digital bathroom scales.

My small scales only go to 2kg, so they were no use either....

[Talasas]

Hey guys, sorry to be digging up an old thread but I scored a set of 20V headers recently and have been checking up on the thing I need to do to get them on.

Now so far the problems I've found are:
- 2 outer bolt holes on head flange need relocating (fine)
- starter motor needs to be moved to other side (not a big issue)
- oxygen sensor needs to be mounted somewhere (where?)
- lower engine pipe flange sits completely different angle to 16V one (<---what do I do here?)

does this basically mean that all you people with 20V headers have had new engine pipes (including secondaries) made up?

Cheers guys