Converted Car Chassis. Is it worth it?

[mADmAN]

So, even with spot welding done, the chassis can never be as stiff as a chassis originally developed for performance...

The door thing could be a difference in quality between a top spec variant EF VS a lower spec EF.

How about your current EG hatch now? Did you compare it with an original EG6 chassis?

i think u got it the other way round.. i was saying that my spot welded EF3 is hell of alot stiffer than the original EF9. even my friend (the EF9 owner) commented that my chassis is better than his. no squeaks etc unlike his.

The door thing is also due to the spot welding on mine. mine closes better than than the EF9 on slopes.

never compared my current EG hatch (EH4 chassis) with original EG6 before.

 

[parakey]

So, even with spot welding done, the chassis can never be as stiff as a chassis originally developed for performance...

Perhaps more accurate to say "chassis originally developed for performance" has some high impact areas reinforced with stronger material whereas the custom spot welded vehicle will have better overall rigidity but not as strongly reinforced at the high impact areas.

From the above pic, spot weld is done to hold separate metal panels together better. If it's one pieced, then there should be no need to weld. I suppose if the sheet metal used is stronger or slightly thicker, then overall rigidity would be vastly improved. Newer manufacturing technology like Proton's RESS hot press forming, would have produced much more rigid cars

 

[RENESIS VIII]

Yeah, something along those lines.

Another point is that when we're driving fast even on a relatively flat highway, the car does go through a lot of undulations (road unevenness). It's the suspension's job to soak up all these minor shocks. If it's rock hard, everything gets transmitted to the body. The faster you drive, the more you demand from the chassis.

Then again, my car is at 10/8 spring rates and it does seem to do it's job. Bear in mind if it's too soft, a bouncy car also twist the body.


Hard to imagine how the front radiator chassis can crack like that.


Hard suspension going over pothole = More impact but strut towers are relatively tough

Hard suspension during hard cornering = Less roll. Less twist

Soft suspension going over pothole = More stress is absorbed by suspension

Soft suspension during hard cornering = More G force. More roll. More twist

Do you get a creaking sound when you go up a steep incline?

Looks like unless your car is just being used in track, don't go too hard on the suspension setup.

Creaking sound like the car is trying to lean backwards during acceleration?

i think u got it the other way round.. i was saying that my spot welded EF3 is hell of alot stiffer than the original EF9. even my friend (the EF9 owner) commented that my chassis is better than his. no squeaks etc unlike his.

The door thing is also due to the spot welding on mine. mine closes better than than the EF9 on slopes.

never compared my current EG hatch (EH4 chassis) with original EG6 before.

Sorry, I misunderstood your message earlier. I apologize for my mistake. So, if spot welding can improve an EF3 that much, I think there is not much reason to get an original EF9 isn't it?

Your EH4 is a local CKD chassis?

Perhaps more accurate to say "chassis originally developed for performance" has some high impact areas reinforced with stronger material whereas the custom spot welded vehicle will have better overall rigidity but not as strongly reinforced at the high impact areas.

From the above pic, spot weld is done to hold separate metal panels together better. If it's one pieced, then there should be no need to weld. I suppose if the sheet metal used is stronger or slightly thicker, then overall rigidity would be vastly improved. Newer manufacturing technology like Proton's RESS hot press forming, would have produced much more rigid cars

I got it now. In your opinion, which one would be better? The one with high impact areas reinforced with stronger material or the one with custom spot weld?

 

[parakey]

Looks like unless your car is just being used in track, don't go too hard on the suspension setup.

:top: If not going to track or drive like a madman, there wont be need for really stiff suspension

Creaking sound like the car is trying to lean backwards during acceleration?

There's a terribly steep incline near my place. Previously before I stiffen the car, it will make a creaking sound when the front wheels get on it.

I got it now. In your opinion, which one would be better? The one with high impact areas reinforced with stronger material or the one with custom spot weld?

Better can be subjective. Some people prefer comfort. I was reading at another forum where someone complained foaming caused his previously flexible Vios to be uncomfortable.

For me, I believe I will prefer to have both reinforced mounts and custom spot welding. In the event of an accident, the mudguard fella is going to curse at me for the spot welds

 

[RENESIS VIII]

:top: If not going to track or drive like a madman, there wont be need for really stiff suspension


There's a terribly steep incline near my place. Previously before I stiffen the car, it will make a creaking sound when the front wheels get on it.

Better can be subjective. Some people prefer comfort. I was reading at another forum where someone complained foaming caused his previously flexible Vios to be uncomfortable.

For me, I believe I will prefer to have both reinforced mounts and custom spot welding. In the event of an accident, the mudguard fella is going to curse at me for the spot welds

But soft suspension does feel unstable even at slighter higher cornering speed.

You mean by just doing foaming, it is effective enough to change the car from comfortable to uncomfortable? I din't really expect this kind of product to show much difference.

Reinforced mounts and custom spot welding. Then you need to get a performance chassis to begin with.

 

[lsm1991]

But soft suspension does feel unstable even at slighter higher cornering speed.

You mean by just doing foaming, it is effective enough to change the car from comfortable to uncomfortable? I din't really expect this kind of product to show much difference.

Reinforced mounts and custom spot welding. Then you need to get a performance chassis to begin with.

hoho a properly setup set of shocks are really nice, it has to be a compromise.
**hard shocks, backside sakit!!! u go over those yellow lines... aiyoh whole car vibrating.....

 

[parakey]

You mean by just doing foaming, it is effective enough to change the car from comfortable to uncomfortable? I din't really expect this kind of product to show much difference.

https://forum.lowyat.net/index.php?showtopic=1474994&view=findpost&p=45084272

 

[parakey]

**hard shocks, backside sakit!!! u go over those yellow lines... aiyoh whole car vibrating.....

Yellow lines? Wait till you go over the red lines.

 

[lsm1991]

Yellow lines? Wait till you go over the red lines.

ohh xpernah go over those yet...... my car goes to and from work je haha

 

[RENESIS VIII]

https://forum.lowyat.net/index.php?showtopic=1474994&view=findpost&p=45084272

His head feels heavy? What?

 

[sweelt]

https://forum.lowyat.net/index.php?showtopic=1474994&view=findpost&p=45084272

This guy from pg go KL do foaming.
Now complain ride hard. Need go KL again.
Big IF , i go KL. Must make sure properly done. Unless they going to sponsor me the cost of travelling.
Very tempting, like betting.

ehhh...uncle VR also give advice...hehehe

i still trust with good suspension, tyre as priority.
2nd is install those necessary macam macam "bar"
Foaming can wait. Once do, no back to the past unless got delorean

 

[vr2turbo]

Give advice on what? You also expert dy......

 

[sweelt]

see your nick at those lyn link by parakey mah....lol
no expert, learn from zth expert

 

[vr2turbo]

see your nick at those lyn link by parakey mah....lol
no expert, learn from zth expert

Oh! you mean in LYN, that is history, no more there ages ago, like more than 5 years already.....lol
Even tyre company personnel pm me ask why I am not in LYN, but in ZTH and Autoworld.....hhahahhahah

Actually I know Desmond from KL AutoFoam. Met him at Autoworld 10th anniversary event, then we had a few forum and group TT at his shop in Jalan Ipoh

 

[parakey]

see your nick at those lyn link by parakey mah....lol
no expert, learn from zth expert

Taikor VR has been around the forums for many years. Highly respected & very helpful. Never imposing.

 

[vr2turbo]

Taikor VR has been around the forums for many years. Highly respected & very helpful. Never imposing.

Respected because Unker status mah!......lol

 

[RENESIS VIII]

Respected because Unker status mah!......lol

Even Tom come and ask you about tyre reviews over here. I remember reading that before.

 

[vr2turbo]

Even Tom come and ask you about tyre reviews over here. I remember reading that before.

Not that I know off. I only remember he ask about the material of the tyre puncture repair thing.

 

[RENESIS VIII]

Not that I know off. I only remember he ask about the material of the tyre puncture repair thing.

I think he is asking if you are trying out the new Goodyear Asym 3 or something like that.

 

[vr2turbo]

I think he is asking if you are trying out the new Goodyear Asym 3 or something like that.

Oh! Not about the tyre review but whether I will be trying them out only......lol
Well, GY Asy3 have to wait, VR size not here yet....