My Fiat 2L TC engine spec

Question and answer direct with GC. Competition engines and 'live' projects only. Good photos to illustrate your post are expected.
Guy Croft
Site Admin
Posts: 4992
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: My Fiat 2L TC engine spec

Post by Guy Croft » Sat Jul 15, 2017 8:15 pm

remind me when you are ready to start

G
Guy Croft, owner

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Sat Jul 15, 2017 8:25 pm

I am waiting for waffle. I think it will be shipped in monday.
Please give me advice how to port it for maximum flow with 44's.
Carbs will be a new Webcon. Tommorow I will post here my settings for stage II fast road/clubman 2L TC. Of corse these settings are made according to your 2010 "red book" not my experierce so your comment are really needed for me.
So I am ready to start dear GC.
GC approved

Guy Croft
Site Admin
Posts: 4992
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: My Fiat 2L TC engine spec

Post by Guy Croft » Sat Jul 15, 2017 9:05 pm

write again when your manifold arrives Peter..

GC
Guy Croft, owner

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Sun Jul 16, 2017 8:24 am

OK, I will do it.

In meantime, GC, could you give your comment about this IDF 44's settings ?

Webcon 44 IDF with 36 chockes

Main jet 145

Emulsion tube F9

Air corrector 180

Idle jet 50

Pump jet 45

Needle valve 175

It is will be works correctly with sealed ducted air intake system in road car ? I know that IDF has some progression problems, do you have a solution for this problem ?
GC approved

Guy Croft
Site Admin
Posts: 4992
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: My Fiat 2L TC engine spec

Post by Guy Croft » Sun Jul 16, 2017 4:35 pm

all good!

Fuel pressure 3.5 - 4psi MAX psi at the carb with engine OFF

make sure the float level is set right.

G
Guy Croft, owner

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Mon Jul 17, 2017 7:00 pm

Float level as your first book ? The distance between the point on the top of the float furthest away from the cover (without gasket) should be 10mm ? In the fully open position, this should be 32.5 ? Or something else ?
GC approved

Guy Croft
Site Admin
Posts: 4992
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: My Fiat 2L TC engine spec

Post by Guy Croft » Mon Jul 17, 2017 7:26 pm

1995 book is correct, yes

GC
Guy Croft, owner

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Fri Jul 21, 2017 11:58 am

GC,

At last I have my own "wafle" manifold.

I done some measurements and ports in this manifold are quite small eg. about 40mm on carb section and about 32-33mm on a head section.

Could you advice me how to port it for maximum flow in my stage II engine ? On a carb side I want to bore to 44mm, on a head side I want to bore to 36mm and match it with head. I don't know what I have to do on a head-radius section. It should be constant diameter 36mm from head side to radius or it should be expand from head side to the radius something like in your glamorous M131 manifold ?

Radius of corse I will make as bigger as I can, I think it is a good choice.

Thanks in advance for your reply.
GC approved

Guy Croft
Site Admin
Posts: 4992
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: My Fiat 2L TC engine spec

Post by Guy Croft » Fri Jul 21, 2017 10:30 pm

shall try to reply this weekend Peter

G
Guy Croft, owner

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Sat Jul 22, 2017 6:09 am

OK, no problem, for your detailed reply I can wait much more ;-)
GC approved

Piotrek125p
Posts: 204
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: My Fiat 2L TC engine spec

Post by Piotrek125p » Mon Aug 07, 2017 3:58 pm

GC, I just remind you with this photos about my question ;-)
IMG_20170807_161304910.jpg
IMG_20170807_161304910.jpg (67.83 KiB) Viewed 161 times
IMG_20170807_161255709.jpg
IMG_20170807_161255709.jpg (70.25 KiB) Viewed 161 times
IMG_20170807_160939790.jpg
IMG_20170807_160939790.jpg (98.29 KiB) Viewed 161 times
IMG_20170807_160955096.jpg
IMG_20170807_160955096.jpg (86.99 KiB) Viewed 161 times
I done some basic measurements and I am pleased. This manifold is unmodified part, made for 40 so I have a plenty material for modifications.

Tomorrow I will check a thickness of this manifold because today I forgot to do it. It could get me an answer about head-radius section. I think that good idea is to get tapering port, but I think it depends of the casing thickness. GC, what do you think about tapering port in waffle manifold ?


EDIT

Today I made some thickness measurements, see attached photos.
IMG_20170808_160824186.jpg
IMG_20170808_160824186.jpg (50.81 KiB) Viewed 107 times
IMG_20170808_160905931.jpg
IMG_20170808_160905931.jpg (43.29 KiB) Viewed 107 times
IMG_20170808_160924713.jpg
IMG_20170808_160924713.jpg (37.99 KiB) Viewed 107 times
IMG_20170808_160933372.jpg
IMG_20170808_160933372.jpg (48.1 KiB) Viewed 107 times
It looks that I have to do a 36mm runner from radius to head and this should be done with a lot of attention. I think that 4mm thick casing is minimum, an OE waffle manifold has 5mm thickness on the bottom so I have to remove material on the top of runner.

But everything will be clear for me if GC leave here his detailed reply.
20170808_164621.jpg
20170808_164621.jpg (20.08 KiB) Viewed 106 times
Of corse 1/8 NPT stainless steel plugs are waiting for cooling port block operation.
GC approved

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest