Fwd Sr20de.....

dirtys12 · 11:54:24 PM / 12-May-07

So heres whats happening. I have a freind that is into building frankstein and odd ball motorsm i.e. taking a 93 ford escort 1.8 L putting on a 96 escort 2.0 head and boosting to 16 lbs. for about 400whp as a daily driver.... Soooo that said....

Is it possible to take a SR20 FWD, swap that intake and exhaust manifolds, which will move the distributer, replace the piston tops with stock SR20DET pistons, add turbo... you get the point.

IS THIS REAL!!!!!

i can get a SR20DE FWD tomorrow with something like 75K on it for $160!!!! is this a reality or just smoke up my arse?!?!?!!??!?!?

seishuku · 01:35:14 AM / 13-May-07

Nope.

The distributor is in the head, which doesn't have anything to do with the manifolds. Given that, you can't move the distributor since the FWD and RWD heads are a fair bit different.
Also, from what I've been told, the transmission bellhousing bolt pattern is different.

The SR20 is one of the few Nissan engines that can't be changed from FWD to RWD with out serious mods.

udelslayer · 09:07:59 PM / 15-May-07

Quote from: seishuku
Nope.

The distributor is in the head, which doesn't have anything to do with the manifolds. Given that, you can't move the distributor since the FWD and RWD heads are a fair bit different.
Also, from what I've been told, the transmission bellhousing bolt pattern is different.

The SR20 is one of the few Nissan engines that can't be changed from FWD to RWD with out serious mods.

Thats not what I've heard. Some guy named Travis from b15sentra.net used a SR20DE block/head to build a DET RWD in an S13. I didnt think the blocks were different, or else it couldnt be an SR20

seishuku · 10:43:21 PM / 15-May-07

I've been told either way. Some say that just the head is different, some say the trans bolt pattern is different, I'm not 100% sure.

The blocks are different though, the bottom end on a RWD SR20DE is closer to an SR20DET than the FWD SR20DE (USDM anyway). The only thing missing on the RWD SR20DE are piston oil squirters and the pistons are different (obviously, 9.5:1/10:1 vs. 8.5:1).

rage · 03:01:06 AM / 16-May-07

the heads are different, but you would need a CAS to for the fwd head to fit against the firewall, may even have to do a little bit of bashing

dirtys12 · 07:29:51 PM / 17-May-07

But are the trannys the same? I'm really hoping they will line up because htis would be a steal, thier a turbo plusar sitting less then a mile away in a junk yard with my name all over it.

CallaroSX · 09:24:48 PM / 17-May-07

Quote from: dirtys12
But are the trannys the same? I'm really hoping they will line up because htis would be a steal, thier a turbo plusar sitting less then a mile away in a junk yard with my name all over it.

why not just build it N/A

heatw · 07:37:46 PM / 28-Jul-07

why not get a real engine lol, sr's aren't even good thats alot fo tiem wasted to take a fwd one and rwd it. and end up with nothing but a shitty engine.

if your gonna do that to anything go grab an ca18de from a pulsar and turn that around that's very very easy. and will bolt right up to a stock s12 tranny and using the stock s12 engine brackets will bolt right in. little to no effort involved to have that thing in there.

i've done this my self to a JDM fwd ca18det before.it's a real easy job. only diff when turboing an na is u have to run an oil feed and return ...scary.. not. bigger injectors are in order too for any real boost.

seishuku · 08:23:24 PM / 28-Jul-07

Non-turbo CA18D's are weak compared to their turbo counter-part. No piston oil sprayers, no crank girdle, weaker rods (?).
SR20DE on the other hand, is only missing piston sprayers, otherwise everything else is the same except for the pistons.

I'm running an S14 SR20DE (10:1 CR), completely stock long block, with a T25 at 7PSI. It's pushing a good amount of power, though the timing map isn't dyno tuned. I plan on going to 10PSI, after I get some safeties put in (over boost protection, and a failsafe electronic boost controller).

But if you want a CA18DET, BUY a CA18DET... Don't mess around with a FWD or RWD CA18DE.

Paul · 11:57:24 PM / 28-Jul-07

Quote from: seishuku

But if you want a CA18DET, BUY a CA18DET... Don't mess around with a FWD or RWD CA18DE.

Tell that to sean (needca4s13) lol 10:1 compression on stock boost is fast.... for about a month then the pistons go.

Ozchuck · 10:08:49 AM / 29-Jul-07

The compression is 9.5 actually
Same as the S13 SR20DE, the S14 version really stepped it up a bit.

As for buying the FWD CA18DE, then buying the parts to suit a RWD conversion, costs more than a RWD equivalent.

And then adding the turbo to the CA is doable, but for that you may as well have obtained the CA18DET, which comes with actual strength.
Plus you'll need a turbo computer and some beefier injectors for the CA.

a DE+T is more worthwhile for the SR20, which already has torque, and gets a whole bunch more, but sonverting to RWD is still too much effort.