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miles

posted on 17th Apr 03 at 09:35

I'm picking up my pocketed pistons today!

I've been told that you want to put 60 thousands of an inch deeper pockets in the pistons, and then take 25 thou off the head to make up the lost compression with a bit extra.

Im going to be running piper 285 cams, they apparently clear the pistons, but if you want to use vernier pullies and time them in properly then you dont want to risk contact!


CRB 553

posted on 17th Apr 03 at 08:47

thanx guys but any1 care to explain these numbers???


Andy

posted on 17th Apr 03 at 07:00

quote:
Originally posted by Daimo B
Depends on how far tuning wise u wanna go.

256
264
270+


Or you can go for something slightly warm like 295/295 :D


Miner

posted on 17th Apr 03 at 01:02

Biggest limitation is the amount is the cam lift as most modern engines run high comp to achieve greater efficency & economy. This is achieved using shallow valve pockets on the piston & limits ur choice to little more than fast road unless ur planning a rebuild.


Daimo B

posted on 16th Apr 03 at 18:10

Depends on how far tuning wise u wanna go.

256
264
270+


CRB 553

posted on 16th Apr 03 at 16:39

How much difference will cams make?
Wot do i wanna get?


luca2020

posted on 16th Apr 03 at 12:06

he has Dbilas throttle bodies, their not really TBs unlike SBD ones


Adam_B

posted on 16th Apr 03 at 10:46

cool, what cams are they ?


miles

posted on 16th Apr 03 at 10:35

Patricks engine hasn't been mapped because it doesn't have mappable engine management! Its the same with everything, BHP = Fuel, how much so depends on engine design. But it would be impossible to have a fast car driven fast that didn't drink it!


Andy

posted on 16th Apr 03 at 07:46

quote:
Originally posted by Adam_B
Dont know the spec, but should be ok as long as it doesnt have a stupidly lumpy cam. but it will probly drink like a fish.

[Edited on 15-04-2003 by Adam_B]


It's a little bit lumpy until it comes on cam at around 4.5K. But that doesn't really matter cos the powerband is clean and flat all the way to 9000rpm :thumbs: OK, so it's not so great if all you want to do is pootle to and from Tescos, but on the open road is mucho fun :D

One more thing, there's a myth that TBs drink petrol. They don't - in fact at light throttle, my fuel economy is just as good if not better than the standard car. Of course, that changes when you press the pedal to the metal... But if the TBs are returning very poor fuel economy under normal driving, all it means is that the TBs haven't been set up and mapped properly. And I think that's exactly the case with patrick's engine.


miles

posted on 16th Apr 03 at 00:29

quote:
Originally posted by Adam_B
Dont know the spec, but should be ok as long as it doesnt have a stupidly lumpy cam. but it will probly drink like a fish.

[Edited on 15-04-2003 by Adam_B]


Doubt you can get 220 bhp without a stupidly lumpy cam that puts the power where most people can never dream of going!

Tuning these engines depends purely on your budget, for £500 you can get a very good power increase. Or for £2500 you can get an excellent one. Depends how far you want to go.


Cybermonkey

posted on 15th Apr 03 at 23:51

yeah patricks fuel economy is non-existent.


Adam_B

posted on 15th Apr 03 at 23:28

Dont know the spec, but should be ok as long as it doesnt have a stupidly lumpy cam. but it will probly drink like a fish.

[Edited on 15-04-2003 by Adam_B]


Miner

Icon depicting mood of post posted on 15th Apr 03 at 22:41

quote:
Originally posted by Daimo B
Throttle bodies ;)

Speak to Andy Hamilton (Andy) for the spec on his 1.6 16v 220bhp beast :D :D :D


Holy shit! :! SBD race kit? What's it like to drive?


Cybermonkey

posted on 15th Apr 03 at 22:24

expensive and only good if you have a decent aftermarket manifold and plenum. Pesonally i would stick with drilled aribox with airfeeds and K&N panel filter. You will see good results with this. Pipercross is mostly for looks IMO

Dave


CRB 553

posted on 15th Apr 03 at 22:21

Any got any experience with a pipercross viper?? They r expensive but sound fairly gud.....


luca2020

posted on 14th Apr 03 at 18:21

TBs on a 1.6 is the best route, esp. when u see that SBD do a 180+ kit and then if ur brave uprate internals further and slap in 50bhp of NOS, lol bake patata scoobies


PanaceA

posted on 14th Apr 03 at 17:55

Read the spec of Davys/Rentons Corsa GSI in Redline. 151Bhp, 0-60 in 6.3 seconds!


Daimo B

posted on 14th Apr 03 at 17:51

Throttle bodies ;)

Speak to Andy Hamilton (Andy) for the spec on his 1.6 16v 220bhp beast :D :D :D


Adam_B

posted on 14th Apr 03 at 17:40

http://www.sbdev.co.uk/


[Edited on 14-04-2003 by Adam_B]

[Edited on 14-04-2003 by Adam_B]


CRB 553

posted on 14th Apr 03 at 17:36

Need advice on how to get the most out of a 1600 16V, without using a turbo.

Cheers