Hey all, long time lurker deciding to post.

Is it possible to lower compression in the 1.6L Alpha by using the 1.5L rods? With this in mind you could hypothetically run a small roots blower like an Eaton M45 on the Accent, assuming you had the necessary supporting mods. I'm thinking you could use barely bigger swaps from cars like the Elantra or Tiburon for fuel pumps and injectors, and add an aftermarket ECU to manage it all. What have I left out? I suppose a custom intake manifold, anything else?



-OR-



The reverse of this is something I've read about in the Honda tuning scene, use higher compression to make mega NA power. I read about a 1.6L Honda engine running higher compression with some sort of water injection system to regulate temperature. I'll see if I can find it again, but i think Bisi Ezerioha has done high compression with finesse. Could you do something like this the 1.6L Alpha?

 

I can't attest much for the Alpha, but on my N/A build I've increased the compression, modified the timing via adjustable cam gear, a full head build with 51mm valves PnP and o-rings, new sleeves and rods and pistons (up 8mm) with ceramic treatment and added a 2nd fuel rail for meth. But then I need to get cooler air to the throttle bodies so I am adding a 934 hood scoop, and with added power I need a stronger clutch and transmission..... So yeah, support mods. All of that said for what the n/a will cost once completed I could have built a fleet of boosted betas.



Not sure how well the Alphas take boost either. For the cost of a beta and how convenient they are to come by (mine was $300 picked up), and how much info is on this site alone regarding the engine swap, not even counting the after market support, it might just be better to build a proper boosted beta. On top of that, asking for big power out of 1.6L with a sub 10k rev limit?







Your kind of treading on odd ground, because anyone really serious about modding (rally Accents included iirc) went with a

 

What he said ^^^^

 

A few years back they used to make supercharger kits for the 1999 dohc accents http://www.capa.com.au/kits_hyundai.htm there is an error on their page about "From 74kW to 140kW" it should be HP not KW.



I'd be more inclined just to turbo it using TF035 from a forester or similar around 5-7 psi.

 

Ive been there. Boosted my 04' used 290cc injectors, 14b Mitsubishi turbo, and ranged anywhere from 7-9 psi all of which was on a stock engine aided with an Apexi SAFC II. Ran it for just over 3 years before converting it to stock because of SMOG testing. I remember there was a couple sites who sold forged pistons with heavy duty rings. Comp ration in a stock 1.6 is 10:1 just high enough to run by itself, but also just low enough that adding about 10-12 psi TUNED would yield a decent amount of power. I had it tuned around 5-6 psi at one point (tuned as best it could be with an SAFC) and was putting down 143 whp (more than than a stock 04' Mini Cooper S at 10 psi) it went up around 10 hp every 1 psi. This was just my experience with my car. I doubt the Alpha changes much so if mine and several other members were able to handle it then its my opinion that when done the right way you could do the same with yours or any other 1.6



Besides all those of you who have Beta swapped, could you check how much space you have between your headers and the radiator support, cause last I checked you could barely fit a fist between there let alone a turbo. Cost, time and money, I just didnt have any to Beta swap then turbo that. I do agree that if your looking to build the best performance Accent then a proper Beta swap with a turbo is where it's at, but if you just want a fun yet still quick ride then go ahead and just boost the Alpha.

 

http://www.superstreetonline.com/fea...nt_import_car/



RIP MISITO!!!

 

After all the trouble and expense to get your liter-and-a-half turbo charged, it made the same power as a stock Beta. /argument

 

Sorry that figure was 143 wheel horse power. The Beta gets 120-130 whp at most. Best i ever saw a Beta motor for sale where I could pick it up was $800 and I would have had to drive 112 miles to pick it up.

 

Yah, Beta's are low in quality and high in price where I live. I know a lot of you run beta-swaps, and big ups on you for it. I wish I had it in me. It was something i really considered, and still haven't completely ruled out. I originally wanted some sort of F/I Beta-swap, but it just isn't in my cards right now.



Now as for my question, can anyone render an opinion on the use of 1.5L pistons to slightly lower compression in the 1.6L engine? I haven't got any real plans here, I'm just looking for discussion on the topic. Is it possible? Would the 3.5 mm. stroke difference difference create any noticeable affect? Would this strain any hardware related to the piston travel?

 

I own an Accent. I wanna go fast. I bought another car.