08-02-2006, 10:21 PM
|
 |
Club Cobra Member
|
|
|
Join Date: Mar 2002
Location: Paris, France. City of wine and food,
Fra
Cobra Make, Engine: Paint:Metalflakes Royal and Abalone stripes registered in France in 1973. Engine: Ford Shelby aluminium block, 482; two 4-barrels 600cfm Holley; Edelbrock Performer Aluminium heads,,fluid damper,4-speeds Aluminium Toploader (short), 2.88rear
Posts: 209
|
|
Not Ranked
Quote:
|
Originally Posted by cleandan
Because you have an aluminum block and, I'm assuming, forged aluminum pistons the clearances will be a bit larger than a similar cast iron block due to expansion rates. The larger clearances when cold will cause a bit more oil consumption than a "normal" iron FE. Now, factor in the idea of a big bore, long stroke, aluminum FE and I see a hard run big bore, long stroke, aluminum FE also...probably at sustained high rpms too. This will cause more oil usage as well. Couple all that with higher compression (above 10.5:1) and you get still more oil consumption. So, in a worst case scenario, yet good running motor like I hope you have, I would say anything over 1 QT usage in less than 800 miles is too much. I am assuming a good running, sealed motor that is not simply leaking or blowing by due to faulty/worn parts. |
O.K. I seem to be in the correct upper limit with almost one quart for 1000 miles. I have no leak and the engine is running fine. Most of my driving is on roads, with fairly high rpm .
__________________
Queenie
|