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By DJ530
A few pictures (so far) of the engine work - eventually I will share wiring info and other details (if anyone is interested?) should anyone else ever need to swap an engine in one of these. The replacement engine is a Harbor freight $750 special 670cc, (lawn mower/industrial type lump) with a few minor upgrades. Should have it back together soon, bolted in. The cold weather slows me down!
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By KTMspeedFreak
Hey all, so i’m in the process of an engine swap and thought it may be a good time to let everyone know I am going to sell the beloved Modded 800cc 😢
Those who subscribe to the youtube channel know what a beast this engine has become! Those that don’t here it is...
Drop in Suzuki F8B with closed diff tranny. Engine only had 50hrs total. This is the carbureted version that Joyner used in its 2006 Mini/Sand Vipers.
Engine is easily 2x more powerful than a stock F8B. This is the little grenade that’s had my buggy going over 70mph as seen on youtube.
Heres why it’s so powerful-
Custom ground camshaft from American Custom Cams. Shaved Head higher compression with 030” clearance. Weber 32/36 carb jetted for sea level. Full stage 3 ported and polished head with enlarged oil ports. Performance 3 angle valve job. Custom build headers.
If you’d like to see and hear this baby in action checkout my channel https://m.youtube.com/c/dirtgeartv
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By KTMspeedFreak
Hey all, some of you know i’m currently working on an engine swap for my 800cc (non brand). For argument sake it’s identical to the older (2006) sand viper in parts.
For those who have done an engine swap I could really use your help are you using whole donor vehicle axles or are you cutting and connecting the donor vehicle axles to the Joyner axles via sleeves?
If I use the donor vehicle axles they would be stronger but then I’m having to replace hubs, bearing and probably knuckles brakes etc. So i’m considering welding the donors to the joyner’s so I do not have to replace everything, but i’m not sure if they would be strong enough.
Any feedback is greatly appreciated!
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By Tomoto
Hey folks. I recently acquired a pre-owned Hisun 500, carburated. And surprise... it has issues.
When cold, it typically starts without any issues, but once it warms up it tends to sputter and stall out. When accelerating, you can also feel it hesitating occasionally, and when you stop or put her into reverse, she will often stall. The fuel is clean, I installed a new fuel filter, and the air filter is clean. Though the fuel pump appears to be working ok, it makes a strange knocking sound whenever power is put to it. I've never heard anything like it, and I'm not sure if its shot or just a cheap Chinese pump thing. I have an aftermarket pump coming, and I've ordered a new ignition coil as well on the off chance that it is faulty. I am hoping replacing these two parts will solve the issue, and if it does I will post the results here.
If not, anyone have any other ideas? Also, I've noticed it is very difficult to find parts for this make... any suggestions on a good source for Hisun parts? I appreciate any comments or insights.
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By KTMspeedFreak
Hey Everyone, I’ve created a few other threads and a bit disappointed at the limited responses the forums seem to get. So rather than asking about an engine swap i’d like to share some information with others here in an effort to generate some discussion!
So i’ve done much research on engine swaps for my 800cc buggy, and my ideal swap would be a suzuki swift gti engine, however they seem to be rare and very expensive if you can ever locate one. The only ones i’ve seen are going for $3500+ which is completely rediculaous becuase the purpose of an engine swap should be to get an inexpensive engine that parts are available for, the suzuki swift is neither.
So in my research, i’m specifically looking for a naturally aspirated lightweight aluminum engine that produces “acceptable” power. Far as I can tell such a thing rarely exists in the US, which is probably why the G13b engines are so redicualously overpriced.
What I have found, and present to you is a Mitsubishi Mirage 1.2L It’s an all aluminium, lightweight 3 cylinder NA engine that’s producing 74HP and 74ft lbs torque. Not crazy power numbers I know, BUT for an NA 170lb readily available, AND cheap engine those are not bad in its stock form. Certainly those of you looking to get a little crazier than I can drop a turbo in and up those base numbers.
Far as I can tell in my research No one has done this engine swap to date, so I suppose I will have to go fist... I am not quite ready to take on a project of this magnitude but will likely make this my winter/spring project and hope to have it completed by early/late spring next year.
I will of course document the install and process once it gets under way. In the meantime please feel free to use this thread to discuss other possible engine swap projects or ideas for such! I love me some buggy action and can’t wait to get this swap underway.
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