Phase II - saab head + 11:1 CR

cpwfos

Senior Member
i want to swap brains with vocky, come to think of it he could probably do that transplant aswell :)
 

alanoo

Senior Member
vocky said:
75 miles done, 425 still to go :(

I haven't even driven it since fixing the exhaust, mainly due to me being in the USA and my vx in the UK :LOL:


Oops yep, forgot that small detail :silent:
 

vocky

Staff
well today I decided to go for a little drive, the engine started with the usual couple of cranks and the piper exhaust was still rather quiet. Cold tickover is about 1000 rpm, so I had a slowish drive until the temp gauge was reading 80C and the oil gauge a steady 75 psi.

Once I had passed 100 miles (since the rebuild) I went to the next phase of 'running in', so half throttle up to 5000 rpm.

It seemed to be quite slow and after a few miles I wondered whether it had any extra power, it seemed slower than before and wondered why I bother spending thousands tuning my vx220 :confused:

So what the hell, I dropped a gear and gave it 6500 rpm...... :eek:

Hmmm, ok, thats why I spend thousands on tuning, I think the speedo must be connected to the rev counter the way it shot up :LOL:

Certainly the power band has changed, as soon as 5500rpm is passed the cams really 'kick in', should be good once the rev limiter is 7800rpm showo..

Not sure what it sounds like now, nothing like a vx220, the induction roar is now fighting to be heard above the exhaust :wtf:

The oil pressure was surprising, at 6500 rpm it was 125 psi but at least it did drop back to 75 psi whenever the revs dropped.

Once back home the piper was louder than the previous milltek, not sure whether it will quieten down when cold or it's just settled. The exhaust gases give a healthy pounding to your hand, so no restrictions in this exhaust :D
 

Muncher83

Regular Member
Sounds good, however I'm glad I went for the supercharger which has a lot of low down grunt instead. I'm sure yours louds better though!
 

rik1083

Senior Member
could never tell what you meant by saying to make the valve inlets/outles straight instead of angled inwards..
but now I have one on my desk I can see exactly what you mean :)

What did you do with the extra water vapour vent hole?

Thanks
Richard
 

rik1083

Senior Member
ah!
extra coolant temp?

your pic..
file.php
 
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vocky

Staff
oh that :LOL:

As I have a different ecu the original z22se temp sensor position is used for the alpha ecu's new temp sensor.

I have fitted an elise S1 temp sensor to that position for my seperate dash temp gauge. The bolt is used for the coolant return feed for the expansion tank.
 

vocky

Staff
you need to fit the metal coolant pipe or a pipe fitting for the coolant return

the metal pipe costs about £20 and includes a new bolt and washers, so complete :)
 

vocky

Staff
I have just got off the phone to Northampton Motorsport :LOL:

so you only have three weeks to wait.......................

just reached 250 miles too, so halfway to running it in :D
 

Mark Dj

Former Staff
Senior Member
Great work Neil, lots of effort put into this project, well done. I would love to know what Bhp it is now :)
 
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