I think the rod/stroke ratio is higher. 1.84 Ted

162mm rod (manley rod)
88mm stroke (4G63 crank)
=1.84

Right? Or am I using wrong math/numbers

 

My lovely girlfriend/fiance who was so kind to pose in her bra and panties for us. Unfortunately I just wiped my hardrive and had to start over with the system and lost that avatar....She did promise to do a new pose when the car is running again...with a little more skin showing.....

 

YAAAAAAAAAY for a big version of hte avatar, and I was just bustin your chops regarding the bearings, it was pretty obvious he assembled it wrong just a joke!!!! hehe You obviously know what to do!

Scorke

 

I hope I know what to do....Follow directions in the Maint Man, go slow and be thorough, measure twice, torque once.

 

My SBR short block for my DSM LASTED about 10 mintues. hope u have a better luck. My Gunthers built bottom end has 2k on it and about 60 drag passes to 9k and still together.

 

Curt Brown also had trouble with his SBR 2.1 motor at the EVO vs Subaru that just passed. The motor failed on him.

 

You're using the right math, wrong numbers.

A 6mm increase in deck height (4G64) requires a 6mm longer rod. The factory rod is 150mm, the revised rod is 156mm.

 

the rod is actually 162mm... they use a much shorter piston. its like a stroker piston... Look at how high the pin is.

 

Well there you go. I learned something new today. I had no idea a 6mm shorter piston was used. Anyway, that gives a rod/stroke ratio of 1.88

 

Look at how he drives it. He admits that his launch RPM is higher than his shift RPM. Plus it lasted quite a while with some dyno sessions as well. If Curt could tell us how many miles he had on it, that would be great.

On the subject of DSM 2.1L....that is a different block (model year) and head. I also believe that the DSM guys have to weld stuff on the block to make it mate with the head right? At least that is what I read on some other site for DSM's.

It is really hard to find any hard evidence on this motor as it is not very common. I will keep a running log on the motor, I aready do for the car with a d-ring binder. But time will tell. I plan on street driving/highway trips and an occasional auto-x/track day. The car will turn into a weekend only vehicle. I have no plans on this being a daily driver anymore.

I am very open on here about my experiences with all my parts be it good or bad. I have nothing to hide when things fail. Even if the cause is my fault.

 

another question. My head took some damage on the #4 cylinder combustion chamber. One of the intake valves had the rocker arm come off the valve stem/spring. I have no idea how that happened. I was thinking that I should reman the head but the price is high. Is it necessary to replace the valve guides? Or should I just go with new springs (obviously for the JUN cams) with new valves and seals? I dont think the valve is bent or made any contact with the piston. Can I get away with just replaceing the moving parts (which I can do myself)

 

Unless it's connecting rod bolts, then you torque like 5-6 times

 

what year 4g64 block do you need in order for the power steering and a/c components to bolt up properly?

 

why not 2.3???

good luck

 

not to put a damper on your new motor excitement but like a year ago i ordered a tranny from SLOWBOY and the guy was really nice did everything to help me out and when he got my money everything was good till i got my tranny that they said was NEW but actually mitsu dosent make new trannys for my gst they only "REBUILD" them well when i got my tranny in the tranny (gears) were all sloppy and would not downshift from 3rd to 2nd while moving unless u stopped the car and went through the gears it would downshift and every body i talked to said it was a engaugement prob and i had a new slave cyc and new clutch master cyc so i knew it wasent that but to make a long story short the tranny was crap it was painted silver paint the came off and grinded and poped out of 5 gear and this was from SLOWBOY RACING that said it was a new tranny from mitsu and when i called to tell them it was bad they said " OHH IF U WANT U CAN DRIVE OUT HERE (WHICH IS 6 HOURS AWAY) and well take a look at it and from there they did nothing to help me out or no refund or anytrhing !!! so i strongly advise no one to deal with slowboy iam not vendor bashing iam just tellin ppl to watch out for bad vendors like them!!! thats all i have for now !