View Full Version : anyone ever re-build an engine?
04-06-2002, 05:35 PM
well i am, im going to attemt to re-build the engine out of my 1987 pontiac 6000, i have had ppl do a re-build for me on my torino but i want to do one myself, do u have any tips for me, like how long it will take etc. some specialty tools that i might need? well thats about it... oh yeah it is a 2.8EFI engine!
so, now that im gona be doing this i'm not gona have that much free time to spend on the board! so i'll probly get kicked off the top 10 posters then!
well what do u think i should do, get the heads shaved, bigger valves, bump the compression up to 13.5:1 and then bore & stroke it, put some foreged pistons in and run the thing on nitrous? and cant forget B&B (balence&blueprint) so icould have my $600 beater w/ 250hp! haha well i'll keep u guys informed on how it goes
im gona get a ton o help from my unkle, he builds race engines, he allways has $40,000-$50,000 engines sitting in his garage! i think that the biggest one he built was like 575c.i. 2000hp w/ a 10-71! yeah and the red-line on that engine he said was like 12,500RPM!!!!!!!!
04-07-2002, 02:30 PM
Sounds good, but why don't you just get a later model 3.1 version of this engine from a junkie's, or a new short block from chevy,,, it will give you a little more power, while still giving you decent milage,,, it is basicallly the same motor as the 2.8 (but bored & stroked) to 3.1,,, so it is physically the same outside dimensions, and should fit right in there,,, all the other GM V6's would not bolt in there without some modifications,,
04-07-2002, 04:17 PM
well i was only kidding about stroking it and boring it out! all im gona do is hone it out and put some new pistonrings it there!
and yeah a 3.1L is just a stroked 2.8 they actualy have a kit on ebay to do that! but it is a ton more than i want to spend! and i would not want to get a new engine to put into my $600 BEATER CAR!
04-08-2002, 09:00 AM
In my opinion, judging by my 35yrs experience of being a back yard mechanic, why don't you just goto a local junkie's & get a clean used 3.1 motor?,,, they are an upgrade to the obsolete 2.8 motor,,, and they are plentiful & probably reasonable (used in almost all small GM cars),,, If you insist on rebuilding the 2.8 motor, check the cylinder wall taper, (all motors after 100k mi. start to mushroom out at the top, sometimes leaving the block unusable),,, like this > \ / ,,, plus, you'll also hafta replace rod & main bearings & seals in order to take out the pistons,,, this is the time to have your block & heads boiled out too!,,, & a new oil pump, then a valve job on the heads (unless u wanna do 1/2 a job?),,, also, you'll hafta micrometer up the pistons & crank, to make sure they are not undersize, or oversize from the factory, to order your parts!,,, had this happen to me on a stock 1974 Nova SS 350 motor I rebuilt, found out at the last minute the crank had all .001" undersize journals, if I'd have put standard bearings in, I woulda had no oil pressure!,,, the bottom line is, it will cost you more in money & time, to rebuild that motor then replace it with a used 3.1, or a new (short block) from the dealer,,, Good Luck either way,,, Mike
04-08-2002, 10:21 AM
Go for it. I've rebuilt two engines completely, and it is thoroughly enjoyable. Make sure you have lots of room, so you can put the parts in places that make sense. I did the first in my 1000 sq ft basement and the other in an 8x12 shed. The shed experience wasn't too bad because it was a Honda 1200cc and I was already real familiar with the engine. I used large corrogated boxes to set the parts on - it absorbs the oil/gas and doesn't put a lot of dust on them.
Go for it, and have a blast!
Here's an engine photo: http://www.users.fast.net/~montana/engine1.jpg
04-25-2002, 06:23 PM
i am awsome! i just got that heads today, i went to a shop to get a valve job, put them on the engine and i am done! all i have to do is put the engine in the car! that didnt take as long as i was expecting! i have been working on it day and night to get it done, i got it out and completly apart in 2 days! it took me about 30 days to do it, i posted it after i had allready started!
05-10-2002, 10:15 AM
Venger, dude your a better man then me, I am still upto my eyeballs with my oldsmobile, I have been restoring my 69 442 for the last few years, there was a 5 years hiatus while I was overseas, but that's kinda a lame excuse, anyway so far the chasis is completely redone, I mean stripped down to bare metal and repainted with "POR-15" great stuff by the way, and then while it was still tacky sprayed with Gm Restoration Black for the right color, I have rebuilt the front end, all stainless steel brake and fuel lines from classic tube, and am in the middle of stripping and repainting the underside of the car, It's sort of scary being under the body as it is sitting on a wooden frame of my own design:D , if it is anything like my boats it's liable to sink,,, anyway, I have a 455 with the c heads, nodular crank, factory "headers" , ARP bolts, etc , but I don't want to start redoing the motor till the body's finished, I am going to order two rear quarter panels , there is a company producing them from the original moulds, I could get away with welding in a patch, I mean the rust isn't that bad, but to go through all this trouble with the chasis, and all, seems cheesy not to do it 100%. anyway this si just another project of many that I somehow get myself involved in:doh: someday I will learn,,, anyway I'll post pics when it's finished!!!:cool:
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