China Factory for ASTM A354 BD BC Hex Bolts to Norway Manufacturers

I too have had the 2004 KIA Sorrento crank shaft bolt break twice. Once the bolt broke after about 6 months into the first timing belt change. I took it to the dealer and they were going to charge me $150 to see if it was broken, and then refund me the money when they fix it. It was 30 days from the recall cutoff. The bolt partially came out then seized in the crank shaft. Upon removal the bolt then snapped off. I then drilled out the center, put in an extractor and the extractor snapped off. I then tapped out the bolt with a smaller tap then went to the same size as the bolt thread tap. I replaced the bolt with a new bolt. Three years later it broke again. This time I used the centering jig from [url]https://brokencrankshaftbolt.com/[/url] this made it much easier drilling out the center of the bolt. I heated the bolt to remove any lock tight and the bolt came right out with an extractor. I then drilled out the crank shaft and put in a 5/8 grade 8 bolt with a “spider’ type lock washer and lock tight. The fix seems to be working great. I think the “Heavy Headed” original bolt is a very bad design, as the thick massive bolt head is actually longer then the bolt, causing centrifugal forces that aren’t needed. The standard grade 8 bolt, as used on most crank shafts, seems to work great. I also had to drill out the new harmonic balancer and washer to accommodate the larger 5/8′s bolt. I will try the softer belt tighten technique too. The fact that the harmonic balancer almost sits flush on the end of the crank shaft with no woodruff key (just a roll pin) seems to be a bad design too (have not ever seen this done). This 2004 Sorrento now has 160K on it. Very strong engine, still has a drinking problem.

Update:
I have had the crank shaft bolt break 2x and unscrew 2x. I have learned a lot. Taped out the crank shaft to receive a larger grade 8 bolt. As well as made the hole larger on the washer and Harmonic balancer pulley. Put a star lock washer on it. Torqued to 130lb with lock tight RED. A year later it loosened and sheared the timing gear pin (this is much better then shearing off inside the crank shaft like before). Bought another harmonic balancer and crank timing gear. This time I’m putting on a very heavy duty grade 8 lock washer and lock tight RED & 130lbs torque. Also put in 2 more pins in the timing gear at my local machine shop see attached pictures. So this gives it a total of three pins between the crank shaft timing gear and the harmonic balancer.

I spoke to the local Kia parts dealer and he said this engine is in 2 other Kia’s but transverse mounted with no problems. My theory is there is so much weight out there that it pulls itself apart moving up and down from the road. Since there is no woodruff key on the harmonic balancer and it doesn’t slide onto the crank shaft (like every other engine on the road) I thought 2 more pins might keep the slipping at bay. The balancer pulleys gotta weigh 15-20lbs and that’s a lot of weight spinning out there on one bolt. It’s just a bad design that needs help. I’ll repost if this doesn’t work. I should sell it but it’s the kid’s college car and other then the “y” in the heater hose and all the plastic covers turning into crayon and the head lights burning out every 6 months, and the drinking problem , , , , , it’s been a pretty good car. Mark Peveler702-379-7357 MarkPeveler@cox.net

UPDATE 28OCT14
This fix failed one year out, but the bolt didn’t break or cross thread. I will either tap in 3 or 4 flat head screws with hex drive or threaded in studs, then sand blast all compression surfaces. I will cross hatch washer as well. The Sorrento has 188K. It’s paid for and I don’t want car payments so I’ll fix it again. The benefit with the bigger bolt is it didn’t break, just lost power steering. Still ran well even though pulley didn’t turn.

UPDATE 8DEC14
New Pulley/Harmonic Balance and timing belt gear. Put in 3 Allen cap screws though pulley and into gear. Cap screws sit proud and washer was cut to allow protruding cap screws into washer. Instead of #130 lbs torque I went with #150 lbs torque on the 5/8 Grade 8 bolt. Protruding allen cap head screws should keep any movement between gear and pulley as well as washer sliding. A 6 month torque check will be in order.

Almost 4 hrs late 12260 Mew Delhi – Sealdah Duronto Express trying to cover up some time under the madly honking 30204 Howrah WAP 7.

Enjoy the beautiful landscape of Gurpa – Gujhandi ghat section which falls between the two major stations Gaya and Netaji Subhash Chandra Bose Gomoh.

This video is for all the people who are yet to visit Eastern India, specially for u Mr.Honourable

Here is a brief description, history of this ghat:

The Asansol–Gaya section is a railway line connecting Asansol and Gaya. This 267 kilometres (166 mi) track is part of the Grand Chord and in under the jurisdiction of Eastern Railway and East Central Railway. The section links to South Eastern Railway through Bokaro Steel City and Adra.
The Bardhaman-Asansol line was first extended to Barakar in 1858 and then in 1894 East Indian Railway Company extended the line to Jharia and Katras, opening up the Jharia Coalfield. Dhanbad emerged as a premier coal loading area. One railway-related source says that the line from Sitarampur to Dhanbad was built in 1880.
Once the rail link from Howrah to Delhi was completed in 1866, the East Indian Railway was making constant endeavour to reduce the distance of the Howrah-Delhi main line. After several surveys, one in 1888-89 and two more subsequently, a route was determined from Dhanbad to Mughal Sarai via Koderma and Gaya. The major works in this section were a bridge across the Son River at Dehri, and tunnelling and ghat line construction between Gurpa and Gujhandi.
The 22 kilometres (14 mi) Gujhandi (altitude 370m)-Gurpa (altitude 193 m) section, 10 kilometres (6.2 mi) west of Koderma, is a ghat (mountain/hill slope), with the Koderma Plateau sloping down to the Gaya plain.
The Grand Chord was opened on 6 December 1906 by Lord Minto, then Viceroy and Governor General of India with a function at Gujahandi. The Viceroy and Lady Minto travelled to Gaya, from where they travelled in a special observation car to Gujhandi. Two special trains, running from Howrah, carried the invitees. The Viceroy screwed on a silver bolt with a silver spanner to formally complete the line.
A repeat of the historic event was organized by East Central Railway on 6 December 2006, with a special heritage train “Grand Chord ki Rani”, pulled by a 1965 steam engine, carrying the guests from Gaya to Gujhandi.
Several years before the Grand Chord was built, a connection from the Howrah-Delhi main line to Gaya was developed in 1900 (presumably the Patna-Gaya line) and the South Bihar Railway Company (operated by EIR) had laid a line from Lakhisarai to Gaya in1879.Track doubling of the 130 kilometres (81 mi) long Kiul-Gaya section was announced in the railway budget for 2010-2011.
Completion of electrification of the 97 kilometres (60 mi) Patna-Gaya rail route before the end of 2003 was announced by the railway minister Nitish Kumar.
The Bengal Nagpur Railway system was connected to the East Indian Railway Company lines in 1889, thus connecting Asansol to Adra. In 1907 Adra was connected to the Grand Chord at Gomoh.
In 1902, a branch line of EIR was opened from Sone East Bank (later renamed Son Nagar) to Daltonganj. With the development of South Karanpura Coalfield, the Central India Coalfields Railway opened a line from Gomoh to Barkakana in 1927 and from Barkakana to Daltonganj in 1929. These lines were subsequently taken over by EIR.
The Howrah-Gaya stretch was electrified by around 1960.
In 1965, Asansol-Bareilly Passenger was the first long-distance train on Eastern Railway to be hauled by an AC loco.
Most of the Asansol-Gaya section is classified as ‘A’ class line where trains can run up to 160 km per hour but in certain sections speeds may be limited to 120-130 km per hour. The Howrah Rajdhani (between Howrah and New Delhi) travels at an average speed of 85.8 km per hour and the Sealdah Rajdhani (between Sealdah and New Delhi) travels at an average speed of 84.70 km per hour.
The Asansol-Gaya line forms part of the golden quadrilateral. The routes connecting the four major metropolises (New Delhi, Mumbai, Chennai and Kolkata), along with their diagonals, known as the golden quadrilateral, are the most important routes in terms of passenger and freight volume. Although they constitute only about 16 per cent of the total route length, they account for about 50 per cent of the total freight and 47 per cent of the total passenger traffic.

source: wikipedia

Camera: Sony Cybershot WX7