-While the turbo 2.4 is the
same basic configuration as the NA version , the casting has some
slight revisions that we will outline-
http://www.hotrod.com/tec...3_0309_srt/index1.htmlThe engine was built on an archaic base to perform for as cheap transportation for a unreliable car. There are some tweaks as listed done to the engine. As stated the engine dates back decades and has its roots based on nothing more then enlarged VW design. It was not built for forced induction,. Period end of story.When was the first DOHC 2.0? um from like the mid 90s. When could you buy a turbo DOHC 2.0 or 2.4 engine from Dodge? A few years ago. So could this engine be “design?or “built?for forced induction? Only if time travel is possible.Once again as typical of SRT-4 owners spout off lame peak race numbers come out to prove reliability of a KNOW problematic car. Does doubling the HP somehow improve reliability? NO. Was the engine “built for boost? nope it is built to be CHEAP hence the archaic block and the cast crank and the pitiful reliability of the package leading to one of the worst resale values out there only one kia and one Hyundai base models fared worst. That is PITIFUL.Sure one and only one advantage of an iron block is that it can survive under higher boost. How many Scion TC will see more then 300 BHP and care? Say .001%. I’m sure at that point sleeves and a deck guard will be made and at the point the block can perform upto say 600 BHP which .0001% of Scion tC owners will ever need or care about. What are the disadvantages of an iron block: front end weight, detracting from vehicle performance for ride, to road holding, to stability, to braking. Oh the things that matter to 100% of tC owners 100% of the time. Given a choice cast iron block that can support above 300 BHP or aluminum block that has significant advantages for a car, I would hazard to guess if such a choice was a no cost option from Toyota, 99.9999% of tC owners would opt for the aluminum block. Obviosyly Dodge feels the same way as the motor is scrapped after this year, Dodge is going to an aluminum block. Design.Crankshaft, most Toyota, Honda, BMW, Acura, insert an dependable car here have a STEEL crank. Why? Steel is stonger but oh wait you say to me
cast crank Neon is strong because Mopar magazine just had a guy dyno 500 WHP and it did not break. OK,, Ever know anybody that broke a crank? I thought not. So why does say Toyota put a steel crank into just about every engine? Answer: the engine last longer as a steel crank allows the use of significantly harder and longer lasting bearings. So why did Dodge use a cast crank on an obviously high bearing load engine such as the one in the SRT-4 that was “built?for forced induction? Answer: Steel was too expensive and Dodge does NOT care about longevity of the engine. Will the stock cast crank break? Probably not, will it last as long as a tC crank? Definitely not! How about if I double the stock Neon HP? Um you do the math.Did I mention that aluminum blocks also feature Nikasil type cylinder liners, these liners are near perfect in shape and near diamond hard too. Meaning after 200K miles, a simple hone job and the engine block is done good for 200K more miles, the steel crank will only need to be micro polished, while the cast crank will be hash. Also with Nikasil the ring can be hard chrome too which has less friction and can still hold compression over 200K. Wow one more thing every Scion tC has a near indestructible cylinder under normal use. We all know what the Neon has um plain old cast iron, plain old cast rings, nothing different then the last smoking 2.2 Omni that grandma drivers and has been smoking since 50K miles. The mere fact Neon owners have to spout off about 500 HP Neons which make up a small fraction of all Neons out there, demonstrates that the Neon, even though it is a much more expensive car, can’t compete in any other category. I’ve already said in raw HP it is obvious you should buy a Neon and many people have.OK lets sum it up: modern aluminum block benifts 100% of the owners 100% of the time, the archaic cheap iron block would benefit .001% of the owners of a TC. A forged steel crank benefits any engine needing to last 200K or more miles, obviously Dodge does not think their cars much less their engines go that long. The tC has a Nikasil type bore which once again 100% of the tC owners used 100% of the time good for 400K miles, while the Neon has cast iron the exact same iron used in garbage truck engines, Yugo, 1980 Dodge Ominis, Ford Pintos, grand dad’s Chevy wagon, tug boats, lawn mowers etc, unfortunately offering the same reliability too. The question is not how many tC run 500+ BHP on stock internals, it is how many Dodges hit 200K miles? And even if the do how many repairs do they need along the way. Lets see the average Neon sells for 23% of its purchase price after 5 years, while the average Toyota is double that meaning simply if 5 years chances are that I sell my tC and buy two stock SRT-4 IF they are still working.Lets talk turkey, when the tC supercharger comes out it will be backed by Toyota and back by extended warranty too mine goes 7 years 100,000 miles. Out of the Mopar stage kits, how many retain the factory power train warranty, and how many work with extended warranty?
http://www.mopar.com/stre..._srt4_stage3.htmWarranty? Evidently this is a BAD word with Mopar parts:“NO PARTS WARRANTYMopar Performance parts are sold -as is- unless otherwise noted. This means that parts sold by Mopar Performance carry no warranty whatsoever. Implied warranties, such as warranties of merchantability, are excluded. (An implied warranty of merchantability means that the part is reasonably fit for the general purpose for which is was sold). The entire risk as to quality and performance of such parts is with the buyer. Should such parts prove defective following their purchase, the buyer and not the manufacturer, distributor or retailer, assumes the entire cost of all necessary servicing or repair. Dodge, Chrysler and Jeep?vehicle and parts warranties are voided if the vehicle or parts are used for competition. The addition of performance parts does not by itself void a vehicle-s warranty. However, added performance parts (parts not originally supplied on the vehicle from the factory) are not covered by the vehicle-s warranty, and any failure that they may cause is also not covered by the vehicle-s?rStage II “NOTE: The Stage 2 Turbo Upgrade Kits have not been emission certified or submitted to CARB for emissions exemption. Therefore, vehicles with Stage 2 Turbo Upgrade kits are intended for closed-course driving only.?rGee can’t even legally drive it on the street. Ouch?Oh and they are rated in BHP and frankly I don’t care if guys get more, basically there is warranty on the part I quote in case Neon owners can’t read the fine print “Should such parts prove defective following their purchase, the buyer and not the manufacturer, distributor or retailer, assumes the entire cost of all necessary servicing or repair. Dodge, Chrysler and Jeep?vehicle and parts warranties are voided if the vehicle or parts are used for competition?Basically you can ONLY legally use the part for “closed-couse driving?AND if it bust anything on your Neon or if anything bust on your Neon period it is not covered as it can only be used for competition which is directly stated as voiding your warranty. TRD supercharge, full factory warranty and extended warranty too, legal all 50 states. Toyota will give us complete satisfaction.I call that a
slam dunk So Dodge you get 230 BHP from the factory we know it is more like 255 BHP, the next step is stage II, not street legal, voids the warranty by direct wording if used. Give the dealer so much wiggle room.TRD say 200 BHP stage one, with more stages to come say 230 BHP. 50 state legal, back by factory and extended warranty 100%. I think I can live with 50 less HP thanks...