Donations towards server fund so far this month.

 
£0.00 / £100.00 per month
Page:
Home > Help Needed / General Tech Chat > Turbo engine advice

uk boy

20 Posts
Member #: 10074
Member

new Zealand

Hi there Im from nz and I've never tried turboing before.

I have a rebuilt 1275 block and gearbox. I also have a metro turbo kit.
Block is factory spec non turbo 1275 but has a cam grind.

I have two heads one is a new 1275 11 stud head
One is hugely ported and polished and has competition valves but is skimmed alot..

If I'm not wrong a factory head is 2.75 inch so 7 cm. The skimmed head is approximately 6.8 cm. ..

Any help/suggestions welcome.


Turbo Phil

User Avatar

4080 Posts
Member #: 20
My sister is so fit I won't show anyone her picture

Lake District

What pistons are fitted ? If you can get a sensible compression ratio with a suitably dished piston then you may be able to use the modified head, though you need to measure the chambers so you can work out the compression ratio as it looks like it's heavily skimmed.
Also if the valve sizes are very large it may not be ideal on a turbo motor in the interest of reliability.

Phil.

WWW.TURBO-MINI.COM


uk boy

20 Posts
Member #: 10074
Member

new Zealand

So cc in the modified head is 22 that I work it out at..... pistons are factory 1275 dished pistons


uk boy

20 Posts
Member #: 10074
Member

new Zealand

Hopefully this photo works


Attachments:


uk boy

20 Posts
Member #: 10074
Member

new Zealand

One is the new stock head other two are modified head. Would a factory block hold up to small amount of boost? Once finished it will only be used for a Sunday drive probably every month haha


Attachments:


uk boy

20 Posts
Member #: 10074
Member

new Zealand

So I just measured up new head and came up with 20 cc am I doing this right?


TurboDave16V
Forum Mod

10567 Posts
Member #: 17
***16***

SouthPark, Colorado

Potentially in the ballpark.
There are lots of YouTube vids on measuring chamber volume; I've seen some where they use a burette and others using a large syringe. A burette is very easy and more accurate than a syringe for this, and plastic versions (better for the garage) can be purchased for only a few quid off eBay/Amazon, etc...

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Who remembers this first time around: https://www.youtube.com/watch?v=JF0a5aoEGsw


uk boy

20 Posts
Member #: 10074
Member

new Zealand

Yeah I used a siringe and oil and there what I got

Home > Help Needed / General Tech Chat > Turbo engine advice
Users viewing this thread: none. (+ 1 Guests)  
To post messages you must be logged in!
Username: Password:
Page: