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Discussion Starter · #1 ·
My Brother and I are building a Stock Car and using a Wrecked SVT as a donor car. I raced competetively for years in the Northeast and have taken a Hyatus for about ten years. There seems to be a Honda problem up here I would like to solve :D ... My curiousity, is I need to run ruffly a 6;00 plus FD Ratio and wanted to inquire about the Getrag Ratios, and optional gears. Also wanted to know what I could expect out of a tuner for raw Horsepower and torque gains, as this is suppose to be a "STOCK" car.. thanks

FRED
 

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Shot me 3 deer!!!
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can you run race fuel? i'm assuming no. but worth a shot.

1: 4.44:1 Final Drive: 2.88:1
2: 2.67:1 2.88:1
3: 1.33:1 4.25:1
4: 1.08:1 4.25:1
5: 1.33:1 2.88:1
6: 1.08:1 2.88:1

out of a tune, you can expect to be in teh 140's whp, you will only gain a few ponies w/ a tune.
 

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Discussion Starter · #3 ·
yes i can run race fuel, 450lift cams, adjustable pulleys

1: 4.44:1 Final Drive: 2.88:1
2: 2.67:1 2.88:1
3: 1.33:1 4.25:1
4: 1.08:1 4.25:1
5: 1.33:1 2.88:1
6: 1.08:1 2.88:1

assuming you mean the ring and pinion is 4.44 , 4.25 or 2.88?? kinda confused, I usually multiply the trans gear ratio(1,2,3,4,5,6) to the final drive (Ring and Pinion) to figure out where I need to be around 6.00 to 6.25, which obviously changes with tire size..

Say like if second gear was a 1.9 ratio and you had a 3.08 ring and pinion, final would be 5.85

My escort Gt had 4.11 ring and pinion and I always ran that out of third to keep it away from the limiter in the corners because second was too much..

Lastly, what can I do to eliminate the rev limiter or raise it??

FRED
 

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on an SVT, you don't want to. the redline on the stock motor is 7400, the oil pump is cast and flimsy. it will break on you past that. if ur going to rev higher, you need a billet pump that central florida motorsports has. else, well, i don't need to explain to you that oil pressure is important! lol

i didn't really look at the numbers for the gear ratios, lol, i just copied and pasted!

so you can run cam's and gears? can you do porting? if so, you could see over 200 POTENTIALLY depending on ur tune/compression, etc.

topspeed is at 190 i believe w/ their setup right now. its running a header thats different, and stock compression on race fuel. if u built a motor, you could easily be over 200 whp. and i don't know what torque would be. just depends on what the limits are.
 

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Discussion Starter · #5 ·
I dont mind changing the oil pump, its the heart of the Motor, here are the rules... I am using the stock ZX3 body in the Svts place and saving the shell..


Engine Specifications: In-line or horizontally opposed four cylinder engines stock for make and model of car only .030 overbore allowed. Keith BlackTM cast piston allowed, flat tops only. No rotary (WankelTM) engines. 2.4 Liter max.


Heads must remain stock. No alterations allowed. Maximum compression ratio 10.2:1.
Cam not over .450 max lift. Stock sounding idle under 800 RPM. Aftermarket cam gears and under drive pulleys allowed.
HolleyTM 500 allowed; No VDL’s. Fuel pump must remain stock and unaltered. An oil pressure switch is required for electric fuel pump units. NO TURBOCHARGERS.
Ignition must remain stock for make and model year.
Oil pan must remain stock and unaltered for make and model year.

Exhaust: Exhaust system must contain stock manifold for make and year. Exhaust pipe may exit behind door. HEADERS ALLOWED. No alterations to body for header installation. Racing mufflers mandatory.

Ignition: All cars must be equipped with a starter and be self- starting.

Fuel Cell: A fuel cell is mandatory. All fuel cells must be mounted in the trunk area and endorsed in a .22 gauge canister. Maximum capacity 15 gals. A check valve must be installed in the vent line. Fuel Cell minimum ride height 8" from ground.

Transmission: All running gear components, clutch, transmission, rear end, transaxle, etc. must remain stock and unaltered for make and model year. Ok to weld the rears but no aftermarket posi-track or DetroitTM type locking units. No cambered rear ends.

Chassis and Suspension: No independent suspension rear wheel drive. Wheelbase must remain stock and unaltered for make and model year. Wheelbase stock for year make and model. Straight up camber on rear of rear wheel drive cars, ½" +/- rear camber on front wheel drive cars ONLY. Front camber may be 2" on right side, 1" on left side. Shocks must be stock replacement over the counter shocks and struts. NO high performance, QA-1, Pro Shocks or adjustable shocks allowed. No bump stops on shocks or frames. Only two (2) shocks allowed per axle.


FRED....

PS... Many of these rules were written because of Me... :D
 

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PARTS HUNTER
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The getrag has 2 input shafts thats why the ratios jump back and forth
 

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PARTS HUNTER
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So u can still bore .30 and make a 2.3 stroker? Its under 2.4 liters.
 

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well, w/ a tune, race fuel, an ORP (cause it didn't say you need a catalytic convertor. you could go w/ topspeed's race headers if allowed.) svt headers flow well, but topspeeds is top on the market right now. but for a pretty penny!. i was unsure due to wording. stock manifolds must be used but headers are allowed? just a bit confused.

if you can run intake manifolds, there are few custom log mani's out there, PM roushturbodzx3. he makes some good stuff.

of course you can run a larger 3" exhuast. (the svt has been dyno'd NOT to lose power down low w/ the 3".

as for the tune and race fuel, you could clear 8k rpm if you want if the head can support that.

cams, piper makes cams. they are from the UK, but will likely help you in ur power up top. the stock cams are very aggressive actually in the svt, thus the use of VCT.

between cams/ intake, larger exhaust, orp, haders, if allowed, you can see about 200 whp. but you will spend a pretty penny! the SVT's short runners work well up top though!
 

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I 2nd that. My n/a setup was 167hp 144 tq. All bolt ons 91oct tune no cat. I light polish on the head tho. I contacted topspeed about there new header and gave me no response and a cold shoulder about it so good luck on that lol. Maybe use the Svt running gear with a regular zetec 5 spd. That way u can use the lower final drive option
 

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Discussion Starter · #12 ·
Yes and No, I have been known to do foolish things like that before and have gotten away with it, BUT i dont think I am going to have to go that far to get the results I need. I cant port the manifold, but maybe an injector/Mass air upgrade, Optimal C/Air kit, reprogrammed pcm, cams?? what 450cam do you guys recommend or is the stock even better and who makes adjustable gears for cams?? and whose Belt is best to make this live??

FRED
 

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Discussion Starter · #15 ·
This is going to be a fun build and can't wait to keep the forum posted. I'm looking stuff up as we speak and making mental notes of the stuff I can build on my own... How rugged is the getrag... The trans was the weekness in my Escort Gt. Would love to get the gear question I have resolved and I think the rest will be tune as I go... Don't want to put all my cards on the table!!
 

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the trans is strong, but the diff is not.
 

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Discussion Starter · #17 ·
Cam looks like 11.5mm max.. Do you know what the dif ratio is in the getrag and stock 5 speed?? Would like a 4.00 plus dif gear
 

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Discussion Starter · #18 ·
Finally making sense out of the gear ratios!! Lol to final drives in a trans!! Never had heard of it until now...
 

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i wanna say 3.82 in the mtx. there is a 4.06 available.
 

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You can't afford cams ... Cat Cams is the only place that makes SVT cams and to buy a set would cost around $1,000. Not worth it at all. For that money you can have the stock cams reground.

To run adjustable gears you need a VCT Delete kit. 1turbofocus is working on some new ones as well as a few guys on teamzx2, http://teamzx2.com/threads/31633-VCT-Delete-Adaptor..successful-test-fitting!!!

How do they know the compression?
If they use a Katech Whistler you're screwed. Otherwise angle shave the head and drive the compression up.
You can also bump the compression a bit by running the standard zetec head gasket, 3 layer vs the SVT 5 layer.


Being a race car you'll be able to drop lots of weight. That alone will serve you very well.
 
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