Fiat Coupe Forum
- Founded by Kayjey & James Northam
- Funded by the Club for the benefit of all owners
Fiat Coupe Club UK
join the club
Fiat Coupe Forum
 
» Announced
    Posting images


» Related sites
    Main club site
    fiatcoupe.net


» External data
    owners listed
 
Who's Online Now
1 registered members (1 invisible), 182 guests, and 5 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums69
Topics113,543
Posts1,340,440
Members1,785
Most Online731
Jan 14th, 2020
Top Posters(All Time)
barnacle 33,521
stan 32,122
Theresa 23,296
PeteP 21,482
bockers 21,070
JimO 17,917
Nigel 17,366
Edinburgh 16,662
RSS Feeds
Club Events
Club Information
Track Events
Rolling Road/RWYB
Social Events
Non-UK Events
Coupé Related Chat
Coupé Spotting
Coupé News/Press
Buying/Selling Advice
Insuring a Coupé
Basic FAQ's
How to Guides
Forum Issues
Technical Problems
General Maintenance
Styling
Tuning
Handling
ICE and Alarm
Coupés for Sale
Coupés Wanted
Parts for Sale
Parts Wanted
Group Buys
Business Forum
Other Vehicles for Sale/Wanted
Other Items for Sale/Wanted
Haggling/Offers
Ebay links
Other Cars
Other Websites
General Chat
Previous Thread
Next Thread
Print Thread
Polished head and remap question #1509048
23/09/2014 13:17
23/09/2014 13:17
Joined: Sep 2014
Posts: 70
Rijeka, Croatia
gturcic20vT Offline OP
Reaping the fruits
gturcic20vT  Offline OP
Reaping the fruits

Joined: Sep 2014
Posts: 70
Rijeka, Croatia
Hello,

I've rushed myselft and bought a port&polished 20vt head (from a coupe owner that switched to Stilo 2,4 head and needed the money). I don't know the exact spec of the work done, only that it was made to mid spec by a reputable local mechanic/expert.

My car is stock (t28 turbo, smIC, airbox, exhaust), but I've got a full service and engine rebuild coming up - the oil pressure's on the low side, and I plan to refresh the engine bottom end.

I'm having second thoughts on installing the head or not. If I do install it, do I need a remap?
If everything else remains stock, the fueling for the extra airflow (due to less restriction) should be adjusted by lambda on part throttle, and measured by MAF on WOT... or am I wrong?

Re: Polished head and remap question [Re: gturcic20vT] #1509071
23/09/2014 19:33
23/09/2014 19:33

B
burnbike
Unregistered
burnbike
Unregistered
B



you can't go wrong with fitting the head
if made by someone that know what to do
no need necessarily remap, you will not get the best
but with a nearly stock car it doesn't differ too much
i did it 10 years ago on my former coupè so don't worry

Re: Polished head and remap question [Re: gturcic20vT] #1509754
29/09/2014 15:19
29/09/2014 15:19
Joined: Sep 2014
Posts: 70
Rijeka, Croatia
gturcic20vT Offline OP
Reaping the fruits
gturcic20vT  Offline OP
Reaping the fruits

Joined: Sep 2014
Posts: 70
Rijeka, Croatia
Thank You for the reply.
I know I won't see much benefit without the remap, but for now I'm getting the engine rebuilt... I plan to get a remap in the future, once the engine has been run-in and covered some miles.

I'm having second thoughts because I don't know will a ported head mess up the fuelling (too much air = higher EGT & related problems) or will the ECU catch up automatically!?

Can anyone else share a thought (no offence mr.'burnbike')?

Re: Polished head and remap question [Re: gturcic20vT] #1509791
29/09/2014 19:16
29/09/2014 19:16
Joined: Dec 2005
Posts: 5,405
Castle Combe
Flea Offline
Forum is my life
Flea  Offline
Forum is my life

Joined: Dec 2005
Posts: 5,405
Castle Combe
A ported head will not cause you any problems at all, absolute zero smile


[Linked Image]

Re: Polished head and remap question [Re: gturcic20vT] #1509792
29/09/2014 19:16
29/09/2014 19:16
Joined: Dec 2005
Posts: 5,405
Castle Combe
Flea Offline
Forum is my life
Flea  Offline
Forum is my life

Joined: Dec 2005
Posts: 5,405
Castle Combe
Unless... it has been done by a 5 year old with a dremel, seen a few of those!


[Linked Image]

Re: Polished head and remap question [Re: gturcic20vT] #1509867
30/09/2014 10:35
30/09/2014 10:35

B
burnbike
Unregistered
burnbike
Unregistered
B



Originally Posted By: gturcic20vT
Thank You for the reply.


Can anyone else share a thought (no offence mr.'burnbike')?

forum are made to share opinions wink
porting 4 stroke is a lot easier than 2 stroke
as above said you have nothing to worry about

2 stroke are not for engineers,it's like to an abracadabra work
i enjoy more a 2 stroke work than a 4 because
you can be lucky and find an awesome set up

i remember some years ago in 125cc Gp motorbike championship
an italian mechanic prepared the Capirossi bike(unofficial) a lot better
than Official Honda HRC and won the title
or a simple mechanic here in Italy did the carbs jet
better than official Mikuni set for the whole top rider's bikes

that's the reasons why the japaneses shift to the 4 stroke..


Powered by UBB.threads™ PHP Forum Software 7.7.1
(Release build 20190129)
PHP: 7.3.33 Page Time: 0.013s Queries: 15 (0.005s) Memory: 0.7634 MB (Peak: 0.8243 MB) Data Comp: Off Server Time: 2024-03-29 02:06:29 UTC