Search found 645 matches

by ar4me
Mon Oct 19, 2009 7:23 pm
Forum: Performance
Topic: Upgrading a 3.0L 24V
Replies: 46
Views: 21397

Re: Upgrading a 3.0L 24V

If I were you and money was not an issue I would leave your 24v GTV6 alone and find another GTV6 to build. I would do a 3.5 24v twin-turbo with front mounted Getrag 6 spd gearbox. This would take serious engineering and modification, so you would need to find someone willing to build for you. Don't ...
by ar4me
Wed Sep 30, 2009 6:33 am
Forum: Exhaust System
Topic: Exhaust Leak
Replies: 25
Views: 16649

Re: Exhaust Leak

...I would have just stuck with the standard manifolds for they flow very well indeed. Or copied their exact same design but slightly larger diameter..? Stock manifolds on a 24v in a GTV6 :? This is not something you just buy off the shelf. You are lucky if someone makes something you can buy (with...
by ar4me
Mon Sep 28, 2009 12:19 pm
Forum: Race Cars and Track preparation
Topic: Drive Shaft CV's keep breaking
Replies: 31
Views: 20952

Re: Drive Shaft CV's keep breaking

I use a special motorsport grease which I've bought some years ago from a WTCC mechanic. Unfortunately, I don't know what type or brand it is as it came in a blank container. The grease Dennis mentioned is used by most racers over here, they all speak very highly of it. Are you referring to the mag...
by ar4me
Sun Sep 27, 2009 6:25 pm
Forum: Race Cars and Track preparation
Topic: Drive Shaft CV's keep breaking
Replies: 31
Views: 20952

Re: Drive Shaft CV's keep breaking

What kind of breakage?

I haven't experienced any issues. Could it be that modification of Dedion has altered distance/angle from hub to transaxle output flange beyond some critical measure. Didn't Kevin mention someone in SA having issues with that on Alfettas?

Jes
by ar4me
Sun Sep 27, 2009 3:09 pm
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Thanks for pointer Kevin. I will also check origin of bearings when I pull them out - I can just imagine they are Chinese made. Though, I only buy from reputable Alfa parts suppliers, but you never know. New bearings going in are SKF.
Jes
by ar4me
Sat Sep 26, 2009 6:13 pm
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Raced 2 weeks ago in 100F ambient, and my temps were as foolows: 1. Coolant: 220F 2. Engine oil: 230F 3. Transaxle oil: 230F This is with sensors and dash gauges, observed during race - not with external infrared measurements after the fact in the pits. I have no plans to add transaxle oil cooler. I...
by ar4me
Mon Aug 24, 2009 4:17 pm
Forum: Race Cars and Track preparation
Topic: No longer a ''budget" race GTV
Replies: 309
Views: 140083

Re: No longer a ''budget" race GTV

kevin wrote:I gues silicon has other good uses :P
And that would be for semiconductors: http://en.wikipedia.org/wiki/Silicon :wink: :lol:

Oh, that wasn't what you meant? :wink:

Jes
by ar4me
Sat May 30, 2009 10:33 am
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Zamani wrote:Jes,
Is your clutch disc sprung?
Certainly unsprung! Less inertia for the syncros to deal with. On a street car I would use a sprung disk. Also on the 155 consider that you have no give (like couplings on the 75) between engine and clutch.
Jes
by ar4me
Sat May 30, 2009 9:13 am
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Kevin,
This is all custom work - there is no link to something bolt-on. I'm using an Alfetta clutch housing and the Alfetta clutch slave setup (that mounts off the clutch cover instead of off the "V6" bracket further back.)
Jes
by ar4me
Fri May 29, 2009 1:05 pm
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Diameter of clutch in inches - much smaller and lighter than stock, including flywheel - clutch housing looks empty. Light weight clutch disk is good for syncros. Smaller diameter reduces inertia, and low weight is helpful in general. All well-known.
Jes
by ar4me
Thu May 28, 2009 7:32 pm
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Jes , how many laps have you done ? Kevin, I ran the 3.7 for one track day + lots of dyno with a stock 100k mile transaxle :shock: After that I basically took the car apart for some major changes - still apart as real work has not allowed me time to finish it :oops: The box originally built for the...
by ar4me
Tue May 26, 2009 6:38 am
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Mats wrote:Read= This oil is not to be used for Hypoid gears, it will not work.
... This will destroy a hypoid gearset in a hurry.
Mats, you must be confusing things - got 100s of thousand of miles over many years without any issues.
Jes
by ar4me
Mon May 25, 2009 6:37 pm
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

The clutch plates can "stick" to each other making some noise. Have never noticed any noise with 75/90NS - track or street. I think that one concern from adding the LSD friction modifiers or use the (75/90 which has the LSD friction modifiers) is that this may be generic instructions for ...
by ar4me
Mon May 25, 2009 9:04 am
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Mats, each to his own. I will note that you and Micke believe 75/90NS, as is, is NOT correct for our transaxles with LSD... though, don't say I didn't give you a heads up.
Jes
by ar4me
Mon May 25, 2009 7:37 am
Forum: Race Cars and Track preparation
Topic: When should a gearbox have an oil cooler ?
Replies: 99
Views: 46019

Re: When should a gearbox have an oil cooler ?

Funny indeed. Just proves that you cannot rely on the manufacturers info blindly - 75/90NS is the one to use for OUR transaxles with LSD, as is, without any modifiers. This is an example of the problem MD was getting at, I think.
Jes