oohogwash1

Just browsing ebay and saw these three sizes advertised, (10,14,17mm)
I have an eec IV inlet going on my build and figure one of these will be good.

I had heard the 10mm was worth getting, never seen 14 or 17mm presented.
Has anyone got or heard any feedback on the value of these items (all sizes).


Thanks
Gavan

tony66

iTrader: (7)

i have a 14mm well engineered conversion works well with supporting mods-even looking at the flow from t/b far more space-its very restrictive standard

i have a whole kit for sale-will try and put better pics of the cover up later today

Heitmann

iTrader: (1)

I remember something about the 10 mm could be a pain to fit, whereas the 14 mm is plug and play - relating to the fuel rail, somehow.

Rod-Tarry

14mm is the lug width so it fits straight on.

jsa

14 was a perfect fit on my ST.

oohogwash1

I will go for a 14mm, thanks guys, did you notice any difference seat of the pants or dyno wise ?

cossiestu

Didn't know you could get 17mm... Do these make that much difference to performance?

jsa

Tidied a few things at once, don't know how much of the improvement the spacer made.

Glenn_

iTrader: (1)

I would be interested in how much better the engine performs with these spacers too.

Cossy Mike

iTrader: (4)

I bought one last week, 14mm, just waiting for it to arrive.

I might chuck it on before the live map, can only help.


My only question now is, the plenum cover has moved so the support bracket no longer lines up, how do you get around this?

Glenn_

iTrader: (1)

Support bracket? Is that the one that bolts to the engine mount? If so i took mine off bloody years ago.

R4N SS

iTrader: (6)

got a 14mm on mine too, also modded the restriction out of the elbow

pectelboy

Anembo do 10,14,and 17mm ones ,got 10mm on mine seems to make a difference

cossiestu

Same here! Don't think it was even fitted properly before I had the car, as when I took the head off, i wasn't attached to the mount, as it just lifted off....

Glenn_

iTrader: (1)

Just chuck the fooker in the bin lol.

cossiestu

I kept mine, looked a handy looking bit of metal!?

oohogwash1

when you say seemed to make a difference, where do you think it effected.
i understand its subjective

m4tt274

iTrader: (2)

Im guessing the spacers are made of a phenolic/other none thermal conductive material to stop head getting to the plenum? Reduced IATs and all that as well as better flow.

Cossy Mike

iTrader: (4)

My plenum cover has the original M5 stud which passes through the bracket for a nut.

If a spacer is added the bracket won't align, so another problem to sort.

jsa

I made a 14mm longer bracket from a piece of angle.

Nash

iTrader: (3)

Glenn I guess you have never seen the head crack and snap off from not using the bracket?

Glenn_

iTrader: (1)

Nope i haven't matey.

Rod-Tarry

Many years back in the late 1990's a 14mm spacer made 10bhp on a 400bhp conversion its the only test ive heard of.

Glenn_

iTrader: (1)

Is that right Rodney.

Mark Shead

I did a back to back on the engine dyno about 12+years ago, It was on a T34 making 400hp it made no more HP at max as turbo was flatout but up to max it made 10hp and 10ftlb more through the range.


Mark

Rod-Tarry

Well nearly right. Mark has told the full story, I was close considering my age . I remember the 10bhp gain but Mark has pointed out not at the topend.

Glenn_

iTrader: (1)

So the spacer gained more power through the rev range but not at the top of it.

I might invest in a spacer.

Mark Shead

The turbo was to small. A bigger turbo would have made more.

Mark

CossieRich

iTrader: (1)

I borrowed Rod's spacer on my GT30 conversion. Made a big difference. More fuel had to be added to compensate.

Glenn_

iTrader: (1)

Thanks for that info Mark.

Toe Knee

iTrader: (2)

So is a 10mm one on a saph with a t34 .63 Siemens and. Bd14 inlet worth having Mark?! I have one and yet to be mapped so if I would get more through the Rev range would be worth using, not like top end is used as much as we'd like lol.
Apreciate your input

Glenn_

iTrader: (1)

There will be no harm in fitting it imo.

Toe Knee

iTrader: (2)

I was going to originally then told by a few tuners it wasn't worth it unless going bigger than t34, but I've had it kicking about for ages and engine is out the car for its resto so could fit it when I give the engine a freshen up....

Mark Shead

If you have it and its getting mapped then it is a slight benefit.


Mark

Mark Shead

It can make it slightly softer on response if you go to big.


Mark

oohogwash1

is 14mm a safe size ? (not too big like 17mm) I have eec1v plenum

Mark Shead

Yes it's fine.

Mark

Glenn_

iTrader: (1)

So will tje fueling need to be checked after a spacer is fitted.

Mark Shead

Yes.

Mark

Toe Knee

iTrader: (2)

Thanks for the info mark

Be a while before ive done my resto though lol, you don't make standard Ecu's do you from memory?!!