Converted Car Chassis. Is it worth it?

[g4i8y0t]

That means even for EK4 Civic SiR, the chassis is same with the rest of the EK lineup including our local CKD chassis?

As far as I know, yes. Only the front OEM strut bar is different. EK4's has different design (without hinges) compared to local EK model (with hinges).

 

[RENESIS VIII]

if dong full car spot weld will be much more stiffer than oem chassis, that one is race preparation for race dy

But do you think if lets say someone do a full spot weld on a Wira 1.5 or maybe Wira 1.8 C99 chassis, can they achieve the kind of stiffness in your CD9A? I don't think so after seeing your photos of areas with reinforced welds in Evo.

As far as I know, yes. Only the front OEM strut bar is different. EK4's has different design (without hinges) compared to local EK model (with hinges).

All EK came with strut bar originally?

If all EK chassis are same except for EK9, that probably explains why people are selling converted EK hatch at such high price. Since it doesn't matter whether they are local EK or JDM EK4 chassis, they are equally as good.

 

[peterj]

Much more stiffer, mean for race use

 

[lsm1991]

All EK came with strut bar originally?

If all EK chassis are same except for EK9, that probably explains why people are selling converted EK hatch at such high price. Since it doesn't matter whether they are local EK or JDM EK4 chassis, they are equally as good.

ek9's, dc2's most type R's are the same as evos, they have some additional welds here and there.... errrr iirc rear towers and backside section are reinforced, duno whats diferent up front.

 

[Izso]

Even after spot welding, will the chassis be strong enough? I remember one of your old quotes about a Putra with chassis cracks.

Your quote back then.

Yes. But key word is "regularly went track". If you're planning to go track regularly - then I'd probably do more than spot welding. If it's just a daily drive, cracking a C99 chassis is going to be a tough affair.

 

[RENESIS VIII]

View attachment 562446

Much more stiffer, mean for race use

I see. So it is actually possible to further reinforce a weaker chassis with this race use method.

ek9's, dc2's most type R's are the same as evos, they have some additional welds here and there.... errrr iirc rear towers and backside section are reinforced, duno whats diferent up front.

The Type R variants are definitely having reinforced chassis. But how about those one step below Type R models? The Civic SiR chassis? Or the Integra SiR?

Yes. But key word is "regularly went track". If you're planning to go track regularly - then I'd probably do more than spot welding. If it's just a daily drive, cracking a C99 chassis is going to be a tough affair.

So, that is the key point then. If one does not go to track often, a C99 chassis will be strong enough even for powerful engine swaps.

 

[loose_end]

Chasis
EK3 vs EK9 - Different
GTS/GTT vs GTR - Different
Satria vs Satria R3 - Different
Lancer vs Evo - Different
FD vs Type R - Different

How about Satria vs Satria GTi ? & WRX vs WRX STi

 

[RENESIS VIII]

Chasis
EK3 vs EK9 - Different
GTS/GTT vs GTR - Different
Satria vs Satria R3 - Different
Lancer vs Evo - Different
FD vs Type R - Different

How about Satria vs Satria GTi ? & WRX vs WRX STi

Well, those that you listed are clearly very different. The same goes for normal Satria C96,C97,C98 VS C99 Satria GTi. WRX vs WRX STI depends on which generation. The newer generations starting from GD chassis had a different chassis code for WRX and WRX STI. But the older GC8 are same I believe because WRX and WRX STI chassis are called GC8.

 

[loose_end]

Any idea how different is normal Satria vs Satria GTi. Thanks

 

[Izso]

Any idea how different is normal Satria vs Satria GTi. Thanks

c99 chassis vs any other c9x chassis is quite different la. What do you plan to do?

 

[lsm1991]

Chasis
EK3 vs EK9 - Different
GTS/GTT vs GTR - Different
Satria vs Satria R3 - Different
Lancer vs Evo - Different
FD vs Type R - Different

How about Satria vs Satria GTi ? & WRX vs WRX STi

wana confirm.... you are talking about th neo r3 and the neo right??

iirc no difference in the chassis between these 2 models (i think)

also, later batch r3 neo's are basically normal neo's with some r3 gear while the earlier batch limited edition r3's are actually performance oriented from my understanding

 

[peterj]

For me more stress on chassis driving on the street than track, due to special pathhole road in bolehland

 

[RENESIS VIII]

Any idea how different is normal Satria vs Satria GTi. Thanks

GTi's chassis is stiffer and more reinforced than normal Satria chassis.

wana confirm.... you are talking about th neo r3 and the neo right??

iirc no difference in the chassis between these 2 models (i think)

also, later batch r3 neo's are basically normal neo's with some r3 gear while the earlier batch limited edition r3's are actually performance oriented from my understanding

The normal Neo R3 is just some Neo with added accessories. Unless you are talking about the limited edition Neo R3 Lotus Racing that comes in Lotus Racing Green.

As for the older GTi R3, I think that one comes with an even stronger C99 chassis.

Now that Satria and C99 topic has been brought up, anyone here actually knows is a C99 Satria GTi chassis as good as an original Mirage Cyborg-R CA4A chassis? The Mirage that came with 4G92 MIVEC.

For me more stress on chassis driving on the street than track, due to special pathhole road in bolehland

Can potholes actually crack a chassis? Cracking wheels, yes, but chassis?

 

[peterj]

years ago , not to bash or what, but there is a perodua viva owner put on photo to ask help for repair strut tower,cause hentam lubang besar,rim bengkok crack then strut tower spot weld also detached.

 

[lsm1991]

GTi's chassis is stiffer and more reinforced than normal Satria chassis.



The normal Neo R3 is just some Neo with added accessories. Unless you are talking about the limited edition Neo R3 Lotus Racing that comes in Lotus Racing Green.

As for the older GTi R3, I think that one comes with an even stronger C99 chassis.

Now that Satria and C99 topic has been brought up, anyone here actually knows is a C99 Satria GTi chassis as good as an original Mirage Cyborg-R CA4A chassis? The Mirage that came with 4G92 MIVEC.

Can potholes actually crack a chassis? Cracking wheels, yes, but chassis?

speaking about the neo's there are so many variants...
r3 clubsport - mild looking, had cage #win
r3 limited editions - i think these had a fancy plate with the number
r3 kited - nothing but kit, fancy seats, trim
r3 lotus ediion - green and this had the most fancy bits and power

if im not wrong, chassis used for all of em are the same, the clubsport had the extra cage and that was about it


i guess if the pothole is large enough and the force was great enough to bottom out your suspension and transmit enough force to mess everything up... yeah i guess?

 

[RENESIS VIII]

speaking about the neo's there are so many variants...
r3 clubsport - mild looking, had cage #win
r3 limited editions - i think these had a fancy plate with the number
r3 kited - nothing but kit, fancy seats, trim
r3 lotus ediion - green and this had the most fancy bits and power

if im not wrong, chassis used for all of em are the same, the clubsport had the extra cage and that was about it


i guess if the pothole is large enough and the force was great enough to bottom out your suspension and transmit enough force to mess everything up... yeah i guess?

How about the chassis for Neo 1.3 VS Neo 1.6?

If your suspension is too stiff, is it possible to transfer the force of the impact to the chassis and crack it?

 

[parakey]

If your suspension is too stiff, is it possible to transfer the force of the impact to the chassis and crack it?

I think the answer can be yes & no.

Chassis strain can come from traversing fast over undulated surfaces. So if your hard suspension isn't soaking enough of it up, the impact gets passed along to the chassis.

On the other hand, when you go fast around bends, dip hard when braking, you are twisting the chassis. So, a hard suspension with lower roll center may help with such cases.

Trying to imagine such scenarios is making me :stupid:

 

[sweelt]

Might happen, when drive through deep potholes. Feel like the car got no suspension. Shocks bottoming out.
everything flies in the car.

 

[RENESIS VIII]

I think the answer can be yes & no.

Chassis strain can come from traversing fast over undulated surfaces. So if your hard suspension isn't soaking enough of it up, the impact gets passed along to the chassis.

On the other hand, when you go fast around bends, dip hard when braking, you are twisting the chassis. So, a hard suspension with lower roll center may help with such cases.

Trying to imagine such scenarios is making me :stupid:

So, your analogy is like this.

Hard suspension going over pothole = Stress might transfer to chassis
Hard suspension during hard cornering = Less stress to chassis
Soft suspension going over pothole = More stress is absorbed by suspension
Soft suspension during hard cornering = More stress to chassis

 

[parakey]

So, your analogy is like this.

Hard suspension going over pothole = Stress might transfer to chassis
Hard suspension during hard cornering = Less stress to chassis
Soft suspension going over pothole = More stress is absorbed by suspension
Soft suspension during hard cornering = More stress to chassis

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.

After about half a year, the owner noticed a lot of strange squeeky noises and after some checking discovered cracks (very visible) along the front left absorber mounter area near the engine mounting and the front radiator chassis area there.

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?