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), 370 guests, and 1 spider.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums69
Topics113,600
Posts1,341,109
Members1,802
Most Online731
Jan 14th, 2020
Top Posters(All Time)
barnacle 33,553
stan 32,122
Theresa 23,300
PeteP 21,512
bockers 21,071
JimO 17,917
Nigel 17,367
Edinburgh 16,787
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
Page 4 of 4 1 2 3 4
Re: Reliable 350bhp - What mods / how much? [Re: barnacle] #914019
08/10/2009 09:31
08/10/2009 09:31

S
suba
Unregistered
suba
Unregistered
S



Originally Posted By: barnacle
Originally Posted By: Nigel
in fact - when I drove my son's 16v n/a, I found myself thinking "this is plenty for everyday driving". Its only 1% of the time that I can exploit the extra bhp, which means the £xx,xxx I've spent is pretty poor value for money


And therein the point, of course. In day-to-day driving, what matters is bottom end torque, not absolute power. It's the big V8 technique of being able to put your foot down and rip up the tarmac at slow speeds that shifts you... I might venture to suggest that a 1200 Mk1 Punto is probably quicker than the majority of coupes to 30mph; the coupe has barely woken up.

Back in the day before Joe sold his car to Eldinho, he couldn't get away from me on the twisties... the shortest straight, and off he went, but while it was twisty, he was mine. And others who have been to Red Lion meets when we've had a run will testify that the 16NA does not hang around.

Is it time for my perennial suggestion that the best mod for a 20vt might be a *smaller* turbo? Less top end power, but more torque at the bottom... it'd be spinning all the time. (I recall driving a 1050 turbo 127 - an absolute hoot!)


Very true about the N/A models on the twisties - I had a B road blat in my coupe (about 300bhp at the time) with a couple of 20V N/A cars with no suspension mods, and they were just as quick until we got to a D/C. However you just dont get the turbo kick of the turbo version - obviously. For a town car or motorway cruiser then I would be fine with an N/A coupe I think..... smile

Re: Reliable 350bhp - What mods / how much? [Re: ] #914098
08/10/2009 10:51
08/10/2009 10:51
Joined: Dec 2005
Posts: 17,367
Staffordshire
Nigel Offline
Forum veteran
Nigel  Offline
Forum veteran

Joined: Dec 2005
Posts: 17,367
Staffordshire
The only issue I would have with the 16v n/a as a motorway cruiser is the revs - its a fairly "busy" engine - circa 4,000rpm @ 80mph IIRC - at that speed, my 20VT is still at less than 3,000rpm, which makes it pretty relaxed.


[Linked Image]
Re: Reliable 350bhp - What mods / how much? [Re: Nigel] #914106
08/10/2009 11:08
08/10/2009 11:08
Joined: Dec 2005
Posts: 33,553
Berlin
barnacle Offline
Club Member 18 - ex-Minister without Portfolio
barnacle  Offline
Club Member 18 - ex-Minister without Portfolio
Forum Demigod

Joined: Dec 2005
Posts: 33,553
Berlin
Agreed. After fourteen years, I'm *still* reaching for 6th. I have wondered about a 16vt final drive, but that would blunt it throughout the range somewhat, and would certainly make it sluggish moving from lane two to lane three in top.

That said - I don't have an issue deciding to drive to Skye or Berlin.

3700 at 80, around 3500 at 75, from memory.


[Linked Image]
Don't get no respect! Coupe Fiat 1994-2000 - an owner's guide <-- clicky!
Re: Reliable 350bhp - What mods / how much? [Re: Nigel] #914141
08/10/2009 11:56
08/10/2009 11:56
Joined: Dec 2005
Posts: 554
Nottingham
C
Cyclone Offline OP
Enjoying the ride
Cyclone  Offline OP
Enjoying the ride
C

Joined: Dec 2005
Posts: 554
Nottingham
Originally Posted By: Nigel
Jules - save your money, get the car you showed me and take it to the SAFE limit of the standard internals, with a good GT turbo (GT28RSR??). Spend a few quid on suspension and brakes and drive it with the smug satisfaction that you're almost as quick as the big power cars, but you've spent just a couple of grand to get there. If the big power bug bites, you can always develop the car in stages, but I reckon you'll be happy below 350bhp


Agreed Nigel, but I'll hopefully have an E55 AMG with uprated crank / water pulley kit, uprated heat exchanger / intercooler pump and remap for when the big power bug bites laugh

Jules.

Re: Reliable 350bhp - What mods / how much? [Re: Cyclone] #914143
08/10/2009 11:59
08/10/2009 11:59

H
Hani
Unregistered
Hani
Unregistered
H



Good informative thread.

So what's your decision Cyclone? smile

Re: Reliable 350bhp - What mods / how much? [Re: ] #914151
08/10/2009 12:07
08/10/2009 12:07
Joined: Dec 2005
Posts: 554
Nottingham
C
Cyclone Offline OP
Enjoying the ride
Cyclone  Offline OP
Enjoying the ride
C

Joined: Dec 2005
Posts: 554
Nottingham
Originally Posted By: Hani
Good informative thread.

So what's your decision Cyclone? smile


If I go the Coupe route then I reckon I'll be heading for a std Coupe to upgrade to a GT28RS with all of the associated bits to make it "reliable" laugh , something like this:

GT28RS 0.64
- 14psi wastegate actuator
- Oil restrictor
- Oil feed pipe
- Oil return flange
- Oil return gasket
- T25 gasket
- 5 stud gasket
- Exhaust studs/nuts

3" downipe (5 stud flange)
FMIC + pipework
SIP + Cone and protection
Walbro 255 fuel pump
Fuel pump battery feed
3.8bar fuel pressure regulator
Colder spark plugs
Uprated EBV (ecu boost control)
Race Cat

Remap

Jules.

Re: Reliable 350bhp - What mods / how much? [Re: Cyclone] #914155
08/10/2009 12:13
08/10/2009 12:13

S
suba
Unregistered
suba
Unregistered
S



You forgot a clutch. wink

brakes and suspension are also not in the list...

Re: Reliable 350bhp - What mods / how much? [Re: Cyclone] #914158
08/10/2009 12:15
08/10/2009 12:15

H
Hani
Unregistered
Hani
Unregistered
H



Nice Jules. Standard engine then wink

I think this will put you in the range of 320-340hp at a moderate boost level and good spool up.

and I think it will be be reliable laugh

Re: Reliable 350bhp - What mods / how much? [Re: ] #914170
08/10/2009 12:27
08/10/2009 12:27
Joined: Dec 2005
Posts: 554
Nottingham
C
Cyclone Offline OP
Enjoying the ride
Cyclone  Offline OP
Enjoying the ride
C

Joined: Dec 2005
Posts: 554
Nottingham
Originally Posted By: suba
You forgot a clutch. wink

brakes and suspension are also not in the list...


I know.

The std car I've seen has a recent clutch so that can be ran until it decides to give up.

Suspension wise it won't be being thrashed around bends etc too often so will just go for lowered springs / may need wishbones etc etc.

Brakes wise then just better specced pads (Ferodo 2500?) and better discs, although last time I had a Coupe then uprated discs were a grey area.

Jules.


Re: Reliable 350bhp - What mods / how much? [Re: Cyclone] #914191
08/10/2009 12:53
08/10/2009 12:53

S
suba
Unregistered
suba
Unregistered
S



For a road car I would run mintex 1144's - if the discs are in good condition leave them until they need to be replaced.

Lowering springs alone are worse than standard suspension.

fair do's about the clutch - but a standard one wont last long with the RS's thumpy power delivery, so you may well be limited or have issues when getting it mapped.

Re: Reliable 350bhp - What mods / how much? [Re: ] #914268
08/10/2009 14:06
08/10/2009 14:06
Joined: Dec 2005
Posts: 2,194
Göteborg, Sweden
Freddan72 Offline
Competition Level
Freddan72  Offline
Competition Level

Joined: Dec 2005
Posts: 2,194
Göteborg, Sweden
Here is a comparison between TB28 (controlled by PRV, FMIC, 2.75" Blueflame, RC), GT28RS 0.64 (Saint EBC, 3" exhaust, FMIC, RC) and TD04-19T (AEM EBC, FMIC, 2.75" Blueflame, RC). All three setups have been tested on the same RR.

click to enlarge

TB28: 1 bar @ 3050 rpm
GT28RS: 1 bar @ 3250 rpm
19T: 1 bar @ 3300 rpm

As you can see the OE turbo has best spool up. 19T is little bit slower than RS but not so much. This shows that a ball bearing turbo is not so much faster in spool up than a journal bearing turbo.



Last edited by Freddan72; 15/10/2009 09:57. Reason: More info

Coupé Fiat 20V Turbo Plus 1999, T19 Mitsubishi turbo
https://youtu.be/O9qrLj3Ap00 Now FCP Stage3!
Re: Reliable 350bhp - What mods / how much? [Re: Freddan72] #914315
08/10/2009 15:15
08/10/2009 15:15

S
Squid
Unregistered
Squid
Unregistered
S



As a comparison, here is my RR graph from when I had a GT28RS on my car.

At the time it had a 2.25" decat exhaust and standard internals with a Walbro fuel pump and a live map.

click to enlarge

Re: Reliable 350bhp - What mods / how much? [Re: ] #914489
08/10/2009 19:16
08/10/2009 19:16
Joined: Nov 2006
Posts: 787
Midlands
ash_p Offline
Club member 2001
ash_p  Offline
Club member 2001
Enjoying the ride

Joined: Nov 2006
Posts: 787
Midlands
I have the gone for the 300-350bhp on stock internals (made 325bhp and 302ibft on a dastek dyno with outside temps of 37 degrees, should make more torque and bhp in the colder weather) and i would say its very drivable round town (mine seems to be very good off-boost).
On the twisties its alot of fun, but can bite back afew times as it spools up very hard just over 3k and likes to torque steer smile
But give it a straight bit of road and its really quick, i was following lucifer's Monaro with 500bhp and he wasn't pulling away very much, so they can hold there own till silly speeds.
I would definitely recommend the gt28rsr and a fc map (what Leighton has done to my car this time round is unbelievable, 200% better then it was with a gtec2)


[Linked Image]
335bhp gt28rsr
Page 4 of 4 1 2 3 4

Powered by UBB.threads™ PHP Forum Software 7.7.1
(Release build 20190129)
PHP: 7.3.33 Page Time: 0.022s Queries: 16 (0.013s) Memory: 0.8032 MB (Peak: 0.9336 MB) Data Comp: Off Server Time: 2024-04-28 21:25:43 UTC