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+--- Thread: Top end rebuild (/showthread.php?tid=835)
Top end rebuild - Niall - 10-01-2012
Ok so for my summer project, I'm going to do a bit of work on the spare head I have for my 1.8. Old mans going to give me a hand with it seeing as he used to do this sort of work for jaguars.
With the head off, this is a perfect opportunity to do all the shitty jobs as well as refurb the head.
Im trying to get a list together of what I need really. I've got on there all the simple things like cambelt kit, top end gasket set, new valves for the new head etc etc but what else should I look at doing?
Cheers guys!
Re: Top end rebuild - Connor - 10-01-2012
Why did your dad molest jaguars? What did they do to him?
Re: Top end rebuild - Niall - 10-01-2012
Connor Wrote:Why did your dad molest jaguars? What did they do to him?
Wouldn't you if they let you? Personally I don't see any problem with animal molestation providing you ask permission first......
Re: Top end rebuild - Foxy-jim - 10-01-2012
Port polish?
Re: Top end rebuild - Niall - 10-01-2012
Foxy-jim Wrote:Port polish?
Getting done. Grinding out the ports as well as they are very restrictive on the 1.8 head.
Re: Top end rebuild - Eeyore - 10-01-2012
i dont know much about engine internals but can you not get fast road cams and fit them at the same time?
Re: Top end rebuild - Niall - 10-01-2012
SRowell Wrote:i dont know much about engine internals but can you not get fast road cams and fit them at the same time?
Requires a remap which on the 1.8, requires a new ECU as apparently the Sagem ECUs are shite to remap!
Re: Top end rebuild - Scott - 10-01-2012
While you've got the head off take the rest of it out and fit a 6 engine
Re: Top end rebuild - Niall - 10-01-2012
Scott Wrote:While you've got the head off take the rest of it out and fit a 6 engine
FYC..... That would be too easy!
Re: Top end rebuild - Foxy-jim - 10-01-2012
There are different types of cams, and some of them you can run without a remap!
Re: Top end rebuild - Scott - 10-01-2012
And also much more win
It's a lovely car mate, just needs the right engine 
While I'm here, inb4 'lol u mean diesel'
Re: Top end rebuild - Niall - 10-01-2012
Oi it's got a good engine in thank you! Just because we're not all driving v6s....especially broken ones!!
Tbh even without a remap, they normally run pretty crap.
Fitting cams isn't the most difficult job so if I can ever afford a new ecu, might get some fast road cams
Re: Top end rebuild - Scott - 10-01-2012
Your couch! My V6 is like sex panther, it's illegal in 9 countries, and 60% of the time, it works everytime.
Re: Top end rebuild - Niall - 10-01-2012
Clearly Scott it isn't as good as the 306. And I'm also disapointed as you own a 306 owners club yet you clearly don't live for the 306! Shame on you!
Top end rebuild - Matt - 10-01-2012
I'm thinking. Of doing this too. Buying a spare head soon
so going to give a clean up, port polish and renew all valves, clean the cams up etc
Re: Top end rebuild - Foxy-jim - 10-01-2012
They run ok without a map! They may cut out occasionally but will be fine! Just dont go for the flat out rally cams just get fast road ones!
Re: Top end rebuild - Niall - 10-01-2012
Iirc the head is very similar to the gti one but the 1.8 ports are triangular! I reckon if they were ground out it would give a fair bit more power.
Might look into a new ecu towards the end of the year. If I get that then cams are a big possibility.
Re: Top end rebuild - Foxy-jim - 10-01-2012
Good man! May aswell put throttle bodies on too then and save money on mapping it twice!
Re: Top end rebuild - Niall - 10-01-2012
Nah don't want the stupidly loud noise. It would sound porn but would be impractical for me.....says the guy who's now got a stupid loud exhaust
Re: Top end rebuild - Foxy-jim - 10-01-2012
I cant wait to cam and throttle body mine!!!
Re: Top end rebuild - Niall - 10-01-2012
Yeah easier for you. You need one less can than me lol
Re: Top end rebuild - Foxy-jim - 10-01-2012
Very true!
Re: Top end rebuild - mjcook1984 - 11-01-2012
would an xsi head be a straight fit but with better flow as its less restrictive than the standard xs head ports must be very similar as they use the same inlet manifold
Re: Top end rebuild - Foxy-jim - 11-01-2012
Or even better could you put a gti head on it?
Re: Top end rebuild - Niall - 11-01-2012
Nope xsi head has a 86mm bore and the XS is 83mm.
I'm not 100% sure what the ports are like on the xsi but i do know there is a lot of room for improvement with the XS head.
Re: Top end rebuild - Niall - 11-01-2012
Foxy-jim Wrote:Or even better could you put a gti head on it?
Same problem as the xsi head mate.
Re: Top end rebuild - Foxy-jim - 11-01-2012
Fair enough mate! I have the same problem with the bore if 1.6 heads being too big!
Re: Top end rebuild - Midnightclub - 11-01-2012
Foxy-jim Wrote:Fair enough mate! I have the same problem with the bore if 1.6 heads being too big!
Pretty certain you can use the rallye head from the 1.3 though
Re: Top end rebuild - Foxy-jim - 11-01-2012
Already looked into this and it will be a pain in the arse as all the sensors need to be changed and I wont be able to use my ecu as its a 3-plug not a 1-plug.
Re: Top end rebuild - Dum-Dum - 11-01-2012
Get new valve guides pressed in and use new valve stem oil seals while your at it.
Maybe slightly larger inlet valves if your going for power.