Saale teiselt margilt + kepsu modimine
Postitatud: 20.01.2008 20:14
Ei viitsi juttu ümber tõlkima hakata. Vaja alumine ots pommikindlaks teha, et 8500+rpm pealt saale ringi ei käiks. Mis te arvate kas tasub selline asi ette võtta ? Pole enne kokku puutunud, kes Tallinnas sellist tööd teeks ? Teine variant on originaal saalet kasutada ja pöialt hoida 
Copy/paste www.turbo124.com lehelt
The second little secret is the big end bearing. Running standard fiat bearings past 7000 rpm will result in the bearings simply spinning... The solution, is to machine out the big end journal and replace the bearings with a chev 350 small journal bearing... You can find much better bearing material and can safely rev the bottom end to 9000rpm. (look in tech section for more information on the big end bearing conversion to chev type bearings)
Only poor quality (read standard) bearings can currently be sourced for the stock 2litre engine - these are fine for your daily commuter - but for the enthusiast who likes to seek the boundaries of the twin cam engines power and rev limits these bearings will fail 100% of the time - usually with a 'big end bearing spin'
Chev bearings due to there popularity are produced by all the leading manufacturers in high quality tri metal. The closest bearing size to the 2litre twin cam comes from the 262-283-327 - 350chevs with small journal in 10 thou oversize. 10 thou oversize chev bearings are becoming something of a rarity themselves these days - however ACL do stock these bearings off the shelf.
Any reputable workshop can perform the conversion - the standard fiat connecting rod has its big end machined out with new 'tags' cut in to suit the chevy rod.
If you plan to upgrade your con-rods to billet steel - you may want to try slotting in some chev v8 rods - these come in 5.7", 5.85" and 6.0" and have the small journal size - so you won't have to pay to have the big ends machined out - these rods are plentiful and cheap! with all the top manufacturers like EAGLE, Crower and Carillo stocking these rods off the shelf. However the big ends are narrower than fiat rods - meaning there is around 2-3mm of bearings that the rods can potentially slide along - how much of an "issue" this can be is unknown - you could press fit the pistons so that they don't float and allow the rod to stay in a fix position - or you can just risk it and assume that no damage will happen...
If you do go this route DON'T weld and fill the big end surface of the rod to make up the extra thickness - people who have attempted this have seen there big dollar engines fail!
Copy/paste www.turbo124.com lehelt
The second little secret is the big end bearing. Running standard fiat bearings past 7000 rpm will result in the bearings simply spinning... The solution, is to machine out the big end journal and replace the bearings with a chev 350 small journal bearing... You can find much better bearing material and can safely rev the bottom end to 9000rpm. (look in tech section for more information on the big end bearing conversion to chev type bearings)
Only poor quality (read standard) bearings can currently be sourced for the stock 2litre engine - these are fine for your daily commuter - but for the enthusiast who likes to seek the boundaries of the twin cam engines power and rev limits these bearings will fail 100% of the time - usually with a 'big end bearing spin'
Chev bearings due to there popularity are produced by all the leading manufacturers in high quality tri metal. The closest bearing size to the 2litre twin cam comes from the 262-283-327 - 350chevs with small journal in 10 thou oversize. 10 thou oversize chev bearings are becoming something of a rarity themselves these days - however ACL do stock these bearings off the shelf.
Any reputable workshop can perform the conversion - the standard fiat connecting rod has its big end machined out with new 'tags' cut in to suit the chevy rod.
If you plan to upgrade your con-rods to billet steel - you may want to try slotting in some chev v8 rods - these come in 5.7", 5.85" and 6.0" and have the small journal size - so you won't have to pay to have the big ends machined out - these rods are plentiful and cheap! with all the top manufacturers like EAGLE, Crower and Carillo stocking these rods off the shelf. However the big ends are narrower than fiat rods - meaning there is around 2-3mm of bearings that the rods can potentially slide along - how much of an "issue" this can be is unknown - you could press fit the pistons so that they don't float and allow the rod to stay in a fix position - or you can just risk it and assume that no damage will happen...
If you do go this route DON'T weld and fill the big end surface of the rod to make up the extra thickness - people who have attempted this have seen there big dollar engines fail!
saalet.