Phyxius Posted September 10, 2005 Share Posted September 10, 2005 I remember reading in a thread a while back about someone who has forged pistons for another motor modified somehow to fit in the L-28 series. I can't find the thread, so I was wondering... Does anyone has more info on what pistons those are and what has to be done to them? Quote Link to comment Share on other sites More sharing options...
KUBO-Z Posted September 11, 2005 Share Posted September 11, 2005 I know of the XL500 piston as an alternate piston. Is this it? Quote Link to comment Share on other sites More sharing options...
Dat260 Posted September 30, 2005 Share Posted September 30, 2005 Hi Can you give more details about this XL500? I'am looking for pistons for my L28/240 con/rod combo. Cheers, Ari Quote Link to comment Share on other sites More sharing options...
NZeder Posted September 30, 2005 Share Posted September 30, 2005 I think the XL500 piston is for a LD28/L14 combo if I recall correctly. Quote Link to comment Share on other sites More sharing options...
tfreer85 Posted September 30, 2005 Share Posted September 30, 2005 According to http://www.ozdat.com/ozdatonline/enginedesign/ you can use RB26DETT Pistons however without other mods you're going to have 6.306:1 compression ratio. Again according to the link you can use the KA24DE which would require you to bore to 89mm and you'd still only have a 7.012:1 compression ratio. So nothing really practical that would necessarily save you some money. The compression is static compression fyi. Tyson Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 1, 2005 Share Posted October 1, 2005 Thanks guys, good link tfreer85. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted October 1, 2005 Share Posted October 1, 2005 60's Corvair uses a 3 and 7/16 bore, and they are factory forged for the super charged, or turbo, cant remember models. They compression distance is close, and offset bushings in the rods, will work fine. Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 1, 2005 Share Posted October 1, 2005 Thanks 1 fast z What is "offset bushing in the rods". How does it compare to the L6 rods configuration? Ari Quote Link to comment Share on other sites More sharing options...
1 fast z Posted October 1, 2005 Share Posted October 1, 2005 ALthough, if you can find a piston from a 173 V6 morot from a 80-84 chev car, with sealed power part number L2492F It is power forged from the factory. I searched for this piston in the past, and it is NLA as a new product. WIth this piston, all you have to do is trim .085" off the dome, and bush the stock rod to .905" and it will work perfectly. Offset the rod with use of the corvair piston is needed for the reason that the Corvair piston has a higher compression distance, and you cant shave enough off the piston, and still have a .200" dome thickness, so you put a bushing in the wrist pin end of the rod, but you offset the bushing to basicly make a shorter rod. Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 1, 2005 Share Posted October 1, 2005 I think the corvair mods is too technical for me, although I do understand your explanation, Thanks. The chev v6 sounds easy, did those v6 came in a camaro? I remember them having v6's. Ari Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 2, 2005 Share Posted October 2, 2005 Daw, do you have more details about this alternative? Ari Quote Link to comment Share on other sites More sharing options...
BlackBeaut Posted October 4, 2005 Share Posted October 4, 2005 I collected this info from Wiseco a while back when thinking about 88mm pistons. I'd heard about some people using the Dodge Neon pistons. 88mm piston table I've no idea though if an L series con rod little end will physically fit within any of the pistons, or maybe that's just not too important. Also the dome/dish on the pistons needs to be thought about, the +14 on the Skyline piston will no doubt include valve cutouts for the 4 valves. It could probably be machined flat though. Cheers, Rob Quote Link to comment Share on other sites More sharing options...
Phyxius Posted October 4, 2005 Author Share Posted October 4, 2005 i've been looking, but unable to find any specific specs on corvair pistons...anyone know what they are? Quote Link to comment Share on other sites More sharing options...
Phyxius Posted October 4, 2005 Author Share Posted October 4, 2005 found it... http://www.21cgt.com/FMWebCatalog/default.htm Part number: L2206F Quote Link to comment Share on other sites More sharing options...
Phyxius Posted October 5, 2005 Author Share Posted October 5, 2005 that's what bushings are for To use this piston, you'd have to have offset bushings and possibly take some material off the top of the piston. By the time you did that, you may have $500 in the setup if you pay someone to do it...so you'd be just as well to have bought some made for the engine. Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 5, 2005 Share Posted October 5, 2005 Guys, I appreciate this very much, Thank You. BlackBeaut, thanks for the link. The Corolla 3TC seems like a cheap alternative, I'll look into prices Cheers, Ari Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 6, 2005 Share Posted October 6, 2005 Hi Daw I did not know that piston has a big dome. Well, it might not be such a cheap replacement after all, back to square one. Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 22, 2005 Share Posted October 22, 2005 Hi guys Would the LZ22S piston be a good low cost alternative for my L28 crank/240 rods? 87mm bore, 35mm pin height and 9.33cc dish = 8.3:1, same as a stock L28 but with a different rod/stroke ratio also good for pump gas. It will be approx .5mm below deck, does it matter? Also, if I shave the piston flat would I increase or decrease compression? I'am thinking it might increase but since its below deck, thats were I get confused. Cheers, Ari Quote Link to comment Share on other sites More sharing options...
NZeder Posted October 23, 2005 Share Posted October 23, 2005 The LZ22S piston is not designed for high RPM in fact I recall seeing in an article that stated they would be not good above 5000rpm. I am/was thinking the same my self, L28 crank, L24 rods and a piston with a 35.5mm pin height to give a better rod/stroke ratio much closer to the L24 ratio. Has anyone used the pistons from LZ20 or LZ22s and is the higher RPM an issue? Quote Link to comment Share on other sites More sharing options...
Dat260 Posted October 23, 2005 Share Posted October 23, 2005 Thanks NZeder. Did you go with the L28crank/L24 rod combo or changed route? It seems ArizonaZ is the only solution, expensive though. How's your build coming along? Cheers, Ari Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.